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Gearbox / Differential Oil
LIQUI MOLY Cera Tec Wear Protection Additive – 300ml
LIQUI MOLY Cera Tec is a high-performance ceramic engine oil additive developed to reduce friction, minimise wear and provide long-lasting protection for internal engine components.
Its advanced formulation combines microscopic ceramic particles with chemical friction modifiers to help protect metal surfaces, improve smooth running and reduce wear during cold starts and normal operation. Can be used in petrol, in diesel engines and compatible manual transmissions. Not to be used in automatic or PKD gearboxes
Porsche Model Compatibility
Cera Tec is suitable for consideration in Porsche models equipped with compatible conventional oil-lubricated petrol or diesel engines:
These are potential applications based on LIQUI MOLY's general engine compatibility, not individual Porsche model approvals. Check the engine oil capacity, Porsche lubricant requirements and suitability of aftermarket additives before use.
Not intended for the electric drive systems of the Porsche Taycan or all-electric Macan.
What Does It Do?
Cera Tec uses microscopic ceramic particles and chemical friction modifiers to reduce direct metal-to-metal contact inside the engine.
This helps:
- Reduce friction and mechanical wear
- Protect components during cold starts
- Improve engine smoothness
- Provide additional protection under high loads
- Support long-term engine durability
Why Is It Important?
Internal engine components experience friction whenever the engine operates, particularly during cold starts and under heavy loads.
Cera Tec provides an additional wear-protection treatment to complement the engine oil, helping reduce friction between moving metal surfaces.
When Should It Be Used?
Cera Tec can be added during routine engine oil servicing, preferably when filling with fresh engine oil.
LIQUI MOLY states that its protective effect can last for up to 50,000km.
It is a preventative wear-protection additive rather than a repair for existing mechanical damage.
Application & Dosage
- Shake the container thoroughly before use.
- Add directly to the engine / gearbox oil, ideally during an oil change.
- One 300ml container treats approximately 3–5 litres of oil.
- Adjust the quantity for larger Porsche oil capacities.
- Follow the manufacturer's normal oil change intervals.
- Do not exceed the recommended dosage.
Cera Tec is also suitable for certain manual transmissions, pumps and compressors.
Do not use in automatic transmissions, PDK/DCT gearboxes or wet-clutch differentials.
Key Features
- Advanced ceramic wear-protection technology
- LIQUI MOLY product reference 3721
- 300ml container
- Reduces friction and internal engine wear
- Helps protect during cold starts
- High thermal and mechanical stability
- Compatible with commercially available engine oils
- Suitable for compatible turbocharged engines
- Compatible with catalytic converters and particulate filters
- Long-term protection for up to 50,000km
- Suitable for compatible manual transmissions
- Not suitable for wet-clutch applications
LIQUI MOLY Cera Tec Engine Oil Additives for Porsche
LIQUI MOLY Cera Tec provides additional ceramic-based wear protection for compatible Porsche petrol and diesel engines, including classic air-cooled 911 models and modern water-cooled applications.
Its combination of ceramic particles and friction modifiers helps reduce mechanical friction, improve smooth running and protect engine components under demanding operating conditions.
Design911 supplies LIQUI MOLY engine oil additives, lubricants and maintenance products for classic and modern Porsche vehicles.
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LIQUI MOLY Hypoid Gear Oil (GL5) SAE 85W-90
LIQUI
MOLY Hypoid Gear Oil (GL5) SAE 85W-90 is a high-performance mineral-based
lubricant developed for heavily loaded transmissions and axle drives without
limited-slip differentials
Fits:
for Manual Gearbox
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
-
Porsche 914 (1970-1976)
for Differential in Automatic Gearbox
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GTS 5.4L 1992-95
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
Its advanced additives provide excellent wear protection, stable lubrication and reliable performance under demanding operating conditions. The formulation also helps reduce gear noise and friction.
What Does It Do?
This hypoid gear oil lubricates gears, bearings and moving components within compatible transmissions and axle drives, protecting against friction, wear and high mechanical loads.
Why Does Gear Oil Deteriorate?
Common causes include:
- High operating temperatures
- Heavy mechanical loading
- Contamination from component wear
- Moisture ingress Extended service intervals
When Should It Be Replaced?
Replace according to the manufacturer's recommended service schedule or if the oil becomes contaminated or degraded.
Unusual differential noise or excessive metallic particles in drained oil should also be investigated.
Specifications & Approvals
- API GL5
- DTFR 12B100
- MB-Approval 235.0H
- MIL-L 2105 D
- ZF TE-ML 16C / 17B / 19B / 21A
Manufacturer recommendation: MAN 342 Type M1.
Key Features
- Mineral-based SAE 85W-90 gear oil
- API GL5 high-pressure protection
- Excellent wear resistance
- Helps reduce gear noise
- Stable lubrication under heavy loads
- Suitable for compatible non-limited-slip axle drives
- Available in 1-litre and 20-litre containers
Porsche Compatibility & Installation
Suitable only for Porsche transmission or axle-drive applications specifying a compatible GL5 SAE 85W-90 lubricant.
Not intended as a substitute for dedicated limited-slip differential oil where LS additives are required.
Always check the manufacturer's specification and recommended filling quantity.
LIQUI MOLY Hypoid Gear Oils & Differential Lubricants
LIQUI MOLY Hypoid Gear Oil GL5 SAE 85W-90 provides dependable lubrication for heavily loaded axle drives and compatible transmissions without limited-slip differentials.
Available in 1-litre and 20-litre containers, it offers excellent wear protection and reliable performance for individual servicing and professional workshop use.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
LM10
The product you are viewing cross references to these numbers
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GTS 5.4L 1992-95
- Porsche 914 (1970-1976)
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LIQUI MOLY ATF III – Automatic Transmission Fluid – 1Ltr / 20Ltr
LIQUI MOLY ATF III is a high-performance automatic transmission fluid developed for conventional automatic gearboxes and compatible hydraulic systems.
Fits:
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 968 3.0L 1992-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GTS 5.4L 1992-95
Always check the required Porsche gearbox oil specification and viscosity for the individual model before ordering.
Its formulation provides excellent lubrication, wear protection and stable friction characteristics, helping maintain smooth gear changes and reliable operation under demanding conditions.
What Does It Do?
ATF III lubricates internal transmission components, transfers hydraulic pressure and helps maintain smooth operation of automatic gearbox clutches and hydraulic controls.
Why Does Transmission Fluid Deteriorate?
Common causes include:
- High operating temperatures
- Oxidation and ageing
- Contamination from internal wear
- Friction material deposits
- Extended service intervals
When Should It Be Replaced?
Replace according to the vehicle manufacturer's service schedule or when the fluid becomes contaminated or degraded.
Delayed gear changes, slipping or unusual transmission behaviour should be investigated before servicing.
Specifications & Approvals
- Voith H55.6335.XX (G 607)
- ZF TE-ML 03D / 04D / 14A / 17C
LIQUI MOLY also recommends this product for applications requiring Dexron III G, Ford Mercon, Allison C4, Caterpillar TO-2, MAN 339 Types L1/V1/Z1 and MB 236.1.
Key Features
- High-performance automatic transmission fluid
- Excellent wear and corrosion protection
- Stable friction characteristics
- Good low-temperature performance
- High thermal and viscosity stability
- Good compatibility with seals
- Available in 1-litre and 20-litre containers
Porsche Compatibility & Installation
Suitable for Porsche automatic transmission or hydraulic applications only where the required fluid specification matches LIQUI MOLY ATF III.
Always verify compatibility before use. This product is not a universal replacement for Porsche Tiptronic, PDK or manual transmission fluids.
LIQUI MOLY Automatic Transmission Fluids & Porsche Gearbox Oils
LIQUI MOLY ATF III provides reliable lubrication and hydraulic performance for compatible automatic transmissions, steering systems and auxiliary drives.
Its formulation helps protect internal components against wear, corrosion and temperature-related deterioration.
Available in 1-litre and 20-litre containers, it is suitable for individual servicing and professional workshop maintenance.
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 968 3.0L 1992-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GTS 5.4L 1992-95
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LIQUI MOLY Top Tec ATF 1100 – Automatic Transmission Fluid
LIQUI MOLY Top Tec ATF 1100 is a high-performance automatic
transmission fluid developed for compatible automatic gearboxes, power steering
systems and hydraulic applications.
Fits:
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 968 3.0L 1992-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GTS 5.4L 1992-95
Always check the required Porsche gearbox oil specification and viscosity for the individual model before ordering.
Its advanced additive formulation provides reliable lubrication, wear protection and consistent friction characteristics, helping maintain smooth gear changes and efficient transmission operation.
What Does It Do?
Top Tec ATF 1100 lubricates internal transmission components, transfers hydraulic pressure and supports smooth operation of automatic gearbox clutches and control systems.
Why Does Transmission Fluid Deteriorate?
Common causes include:
- High operating temperatures
- Friction material contamination
- Mechanical wear particles
- Oxidation and ageing
- Extended service intervals
When Should It Be Replaced?
Replace according to the vehicle manufacturer's service schedule or when the fluid becomes contaminated or degraded.
Delayed gear changes, transmission slipping or unusual operating behaviour should be investigated before servicing.
Key Features
- High-performance automatic transmission fluid
- Reliable wear and corrosion protection
- Smooth and consistent gear shifting
- Stable friction characteristics
- Good resistance to ageing and oxidation
- Suitable for compatible automatic transmissions and hydraulic systems
Porsche Compatibility & Installation
Suitable for Porsche automatic transmission or hydraulic applications only where the specified fluid requirements match LIQUI MOLY Top Tec ATF 1100.
Always verify compatibility against the vehicle manufacturer's specification before use. Not suitable as a universal replacement for Porsche PDK transmission fluid.
LIQUI MOLY Automatic Transmission Fluids & Porsche Gearbox Oils
LIQUI MOLY Top Tec ATF 1100 provides reliable lubrication and hydraulic performance for compatible automatic transmissions and associated systems.
Its formulation helps protect internal components against wear while supporting smooth gear changes and dependable operation.
Design911 supplies LIQUI MOLY automatic transmission fluids, Porsche gearbox oils and drivetrain servicing products.
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 968 3.0L 1992-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GTS 5.4L 1992-95
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LIQUI MOLY Top Tec ATF 1100 G – Automatic Transmission Fluid – 1 Litre
LIQUI MOLY Top Tec ATF 1100 G is a high-performance automatic transmission fluid developed using next-generation synthetic technology.
Fits:
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 968 3.0L 1992-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GTS 5.4L 1992-95
Always check the required Porsche gearbox oil specification and viscosity for the individual model before ordering.
Its advanced formulation provides excellent wear protection, thermal stability and consistent friction characteristics, helping maintain smooth gear changes and reliable transmission operation.
What Does It Do?
Top Tec ATF 1100 G lubricates transmission components, transfers hydraulic pressure and helps protect internal parts against friction, wear and corrosion.
Why Does Transmission Fluid Deteriorate?
Common causes include:
- High operating temperatures
- Oxidation and ageing
- Contamination from internal wear
- Friction material deposits
- Extended service intervals
When Should It Be Replaced?
Replace according to the vehicle manufacturer's service schedule or when the fluid becomes contaminated or degraded.
Delayed gear changes, slipping or unusual transmission behaviour should be investigated before servicing.
Specifications & Approvals
- MB-Approval 236.1
- MAN 339 Types L1 / V1 / Z1
- Voith H55.6335.XX (G 607)
- ZF TE-ML 03D / 04D / 14A / 17C
LIQUI MOLY also recommends this product for applications requiring Dexron III G/H, Ford Mercon, Allison C4 and MB 236.6.
Key Features
- Next-generation synthetic technology
- Excellent thermal stability
- Outstanding wear and corrosion protection
- Consistent friction characteristics
- Good low-temperature performance
- High resistance to ageing
- Compatible with common sealing materials
- 1-litre container
Porsche Compatibility & Installation
Suitable for Porsche automatic transmission or hydraulic applications only where the required fluid specification matches Top Tec ATF 1100 G.
Always verify compatibility before use. This product is not a universal replacement for Porsche Tiptronic, PDK or manual transmission fluids.
LIQUI MOLY Automatic Transmission Fluids & Porsche Gearbox Oils
LIQUI MOLY Top Tec ATF 1100 G provides reliable lubrication and hydraulic performance for compatible automatic gearboxes, steering systems and other hydraulic applications.
Its synthetic technology formulation helps protect internal components against wear, high temperatures and fluid ageing.
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 968 3.0L 1992-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GTS 5.4L 1992-95
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LIQUI MOLY Gear Oil (GL4) SAE 80W – 1 Litre / 20 Litres
LIQUI MOLY Gear Oil (GL4) SAE 80W is a high-quality mineral-based lubricant developed for manual transmissions, auxiliary gearboxes and axle drives operating under normal to high loads.
Fits:
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
Always check the required Porsche oil specification and viscosity for the individual model before ordering.
Its formulation provides a stable lubricating film, excellent wear protection and corrosion resistance while helping reduce running noise and improve gear-changing performance.
What Does It Do?
This gear oil lubricates gears, bearings and transmission components, reducing friction and wear while supporting smoother gear changes.
Why Does Gear Oil Deteriorate?
Common causes include:
- High operating temperatures
- Contamination from internal wear
- Oxidation and ageing
- Moisture ingress
- Extended service intervals
When Should It Be Replaced?
Replace according to the vehicle manufacturer's service schedule or if the oil becomes contaminated or degraded.
Difficult gear changes, gearbox noise or excessive metallic particles in drained oil should be investigated.
Specifications & Approvals
- API GL4
- DTFR 13B100
- MIL-L 2105
- ZF TE-ML 17A (ZF approval ZF000694)
LIQUI MOLY also recommends this product for applications requiring MAN 341 Type E1 / Z2 and MB 235.1.
Key Features
- Mineral-based SAE 80W gear oil
- API GL4 specification
- Excellent wear and corrosion protection
- Stable lubrication under high loads
- Helps reduce gearbox running noise
- Supports smoother gear changes
- Good resistance to ageing
- Available in 1-litre and 20-litre containers
Porsche Compatibility & Installation
Suitable for Porsche manual gearbox or axle-drive applications only where the manufacturer's required lubricant specification matches GL4 SAE 80W.
Always confirm the correct viscosity, oil specification and filling quantity before use. Do not substitute for GL5 differential oil, Tiptronic or PDK transmission fluids unless specifically approved.
LIQUI MOLY GL4 Gear Oils & Porsche Manual Transmission Lubricants
LIQUI MOLY Gear Oil GL4 SAE 80W provides dependable lubrication for compatible manual transmissions and axle drives, particularly those using established gearbox technology.
Its mineral formulation helps reduce wear, protect against corrosion and maintain smooth gear-changing performance.
Available in 1-litre and 20-litre containers, it is suitable for individual servicing and professional workshop maintenance.
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
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DESCRIPTION:
A competition fully synthetic transmission oil formulated using a unique combination of improved chemistry and lower friction NANODRIVE additives to massively reduce friction vs a standard oil. The Millers Oils range of competition gear oils is fully synthetic and incorporates second generation NANODRIVE low friction technology to achieve winning results in both professional and nonprofessional racing.
APPLICATION:
Designed for the lubrication of competition gearboxes. Manual transmissions, synchromesh, non-synchromesh, sequential gearboxes, transfer gearboxes, transaxles and hypoid differentials without limited slip which require API GL4 or GL5 performance. Recommended for modern transmissions where fully synthetic oil is specified, especially for high performance road and track day applications. Hewland, Xtrac, Glebe Transmissions, ZF, Tran X, Elite Transmissions, Samsonas.
Note: Not suitable for plate type limited slip differentials, instead use CRX LS 75w90 NT+.
USER BENEFITS:
• Laboratory tests and results show up to a further 15% reduction in friction and up to a further 17% reduction in wear over the previous award winning NT range
• Exceptional cold flow properties for easier gear changes
• Fast lubrication flow to component extremes on start up
• Very good oxidation resistance and superior thermal stability
• Low friction/ low drag formulation to help reduce operating temperatures
• High film strength for maximum component protection
• Significantly reduces friction, temperature, wear and minimises power loss
• Triple ester formulation works synergistically for optimised film strength and anti-wear protection
• Second generation NANODRIVE low friction technology maximises torque and power
PERFORMANCE PROFILE:
• API GL4
• API GL5
• API MT-1
• MIL-PRF-2105E
• ZF TE-ML-02B
• ZF TE-ML-05B
• ZF TE-ML-07A
• ZF TE-ML-12B
• ZF TE-ML-16F
• ZF TE-ML-17B
• ZF TE-ML-19C
• ZF TE-ML-21B
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
7966
The product you are viewing cross references to these numbers
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DESCRIPTION:
A fully synthetic transmission oil to provide maximum protection and fuel economy.
APPLICATION:
For use in car and light van manual gearboxes and axles where the ultimate performance gear oil is required.
USER BENEFITS:
• Will allow fuel economy of the vehicle to be maximised
• Provides outstanding protection against wear and corrosion
• Improves the quality of the gear change
• Resists the effects of high temperatures and heavy-duty use
• Allows extended service intervals to be used
PERFORMANCE PROFILE:
• API GL-4
• API GL-5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
8376
The product you are viewing cross references to these numbers
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For gearboxes WITHOUT Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and hypoid differentials WITHOUT limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL4 & GL5 / MIL-L-2105D
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 90 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
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For gearboxes WITH Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and all hypoid differentials WITH limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL5
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 90 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
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For gearboxes WITH AND without Limited Slip Differentials (LSD)
Specifically designed for racing vehicle gearboxes, including those used in track, rally, and raid events. Ideal for all mechanical transmissions, whether synchronized or non-synchronized gearboxes, gearbox/differential units, transfer gearboxes, and all hypoid differentials WITH AND WITHOUT limited slip differentials.
Performs exceptionally well under shock loads, heavy loads at low RPM, or moderate loads at high RPM.
PERFORMANCE:
- Standards: API GL5
- 100% synthetic extreme pressure lubricant provides superior anti-wear protection, enhanced high-temperature resistance, and extended service life.
- Zero shear loss: Maintains an unshearable oil film even under extreme conditions.
- Retains 14 grade viscosity after the KRL 20-hour shear test, meeting the SAE J306 Standard, updated in July 1998.
- Exceptional lubricating properties reduce friction and wear.
- 90 grade viscosity at high temperatures ensures excellent oil film resistance and reduces transmission noise.
- Remains fluid at low temperatures for smoother gear shifts when the gearbox is cold.
- Reduces effort required for shifting gears.
- Compatible with all types of seals and yellow metals used in gearbox design.
- Offers anti-corrosion and anti-foam properties.
RECOMMENDATIONS: Change the oil according to the manufacturer's guidelines, and adjust based on your specific usage conditions.
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Porsche Classic Manual Transmission Oil (75W-90 GL-5) is a high-performance oil suitable for heavy-duty transmissions in 924, 928, 944 and 968 vehicles, as well as for the transmissions fitted in all classic 911 models (up to type 996) and in the Porsche Boxster, type 986.
Thanks to synthesis technology, the oil has outstanding properties, including high-pressure resistance, shear stability and lubricity at extreme temperatures. The oil also enables optimal synchronisation and reduces component wear.
Only for vehicles with manual transmission.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
PCG04321052
The product you are viewing cross references to these numbers
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
- Porsche 356 1950-55
- Porsche 356A 1955-59
- Porsche 356B 1959-63
- Porsche 356C 1963-65
- Porsche 914 (1970-1976)
- Porsche 912E 4CYL 1976
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Porsche Gearbox & Differential Oil | Precision Lubrication for Performance and Longevity
Gearbox and differential oils are essential lubricants that protect your Porsche’s transmission and driveline components from friction, heat, and wear. These specially formulated oils ensure smooth gear shifts, consistent torque delivery, and optimal performance across both manual and automatic transmissions.
At Design911, we supply premium gearbox and differential oils developed to meet or exceed the required performance standards for viscosity, temperature stability, and protection. Available in a range of high-performance synthetic and mineral-based formulations, our oils provide superior protection for both road and track-driven vehicles.
Whether you’re maintaining a classic 911 or servicing a modern PDK transmission, our gearbox and diff oils deliver precision lubrication, reduced wear, and lasting reliability.
What Does Gearbox & Differential Oil Do?
Gearbox and differential oil plays a critical role in maintaining smooth power transfer and protecting your Porsche’s internal transmission components.
Core Functions:
- Reduces friction and wear between gears and bearings.
- Provides heat dissipation during prolonged driving or high loads.
- Prevents corrosion and metal fatigue under extreme conditions.
- Ensures smooth gear engagement and quiet operation.
- Maintains consistent performance over wide temperature ranges.
Without proper lubrication, gear surfaces can wear rapidly, leading to noisy operation, gear slippage, or even catastrophic transmission damage.
Why Does Gearbox & Differential Oil Degrade or Fail?
Like engine oil, gearbox and differential lubricants degrade over time due to contamination, heat cycles, and age. When performance breaks down, the risk of component wear and failure increases.
Common Causes of Oil Degradation Include:
- Contamination from metal particles or moisture ingress.
- Breakdown of viscosity from extreme temperature exposure.
- Oxidation reducing the oil’s protective film.
- Incorrect oil grade or insufficient fluid level.
- Neglected servicing intervals in high-performance use.
As the oil’s lubricating properties diminish, it loses its ability to protect critical components — leading to excessive wear, bearing noise, or transmission failure.
Why Replace Your Porsche Gearbox & Differential Oil?
Regularly replacing your gearbox and differential oil is one of the most effective ways to preserve drivetrain integrity and performance. Using high-quality lubricants ensures smoother gear changes, improved efficiency, and longer component life.
Key Benefits:
- Restores smooth gear engagement and quiet operation.
- Extends gearbox and differential lifespan.
- Prevents excessive wear, heat build-up, and corrosion.
- Optimises performance under high torque or track conditions.
- Available in performance synthetic and high-temperature formulas.
- Suitable for manual, automatic, and PDK Porsche transmissions.
Regular oil changes — typically every 30,000 to 60,000 miles depending on driving style — are vital to keeping your gearbox and differential performing at their best.
Highlights
- Premium Porsche gearbox and differential oils.
- High-temperature and anti-wear protection formulas.
- Designed for both standard and high-performance drivetrains.
- Reduces noise, friction, and metal-to-metal contact.
- Suitable for Porsche 911, Cayman, Boxster, Panamera, and more.
- Essential for servicing, restoration, and performance upgrades.
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