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Porsche > 911 & 912 (1965-1989) > 911 1975-1977 3.0L Turbo (930) > Engine Tuning >

Fuel Additives

Fuel Additives

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BG 245: Premium Diesel Fuel System Cleaner - 245 - BG245
1
BG 245: Premium Diesel Fuel System Cleaner
BG245
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Product Information
BG 245: Premium Diesel Fuel System Cleaner
325 ml

New improved chemistry for modern higher pressure diesels

Sister product to BG 244 from BG Products, BG 245 is a newer premium fuel system cleaner for diesel systems. The BG range is regarded by professionals as the best fuel system cleaners of their kind.

Today’s diesels can produce more power with less fuel than ever before. Injector tips in High Pressure Common Rail injection (HPCR) systems are designed to handle produce twice as much injection pressure as mechanical fuel injection. However, diesel fuel is not, being notoriously inconsistent and therefore a threat to HPCR systems. Injector deposits at a miniscule quantity can cause sticking and carbon begins laying on the fuel filter until it reaches a point of plugging. 

New BG 245 Premium Diesel Fuel System Cleaner removes and dissolves deposits from the entire diesel injection system, including inside fuel injectors and combustion chambers. Plus, BG 245 contains a fuel lubricity agent to protect components from wear and cetane improver for cold starts.



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BG245
245

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BG CF-5: Fuel System Cleaner, 325 ml - PN 203, BG203 - PN 203E
3
BG CF-5: Fuel System Cleaner, 325 ml
BG203E
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Product Information
BG CF-5: Maintenance-level Fuel Treatment
325 ml

BG CF-5 is the maintenance-level fuel treatment equivalent of BG44K. It is also dual fuel as it will treat petrol or diesel cars.  CF-5 (CF stands for Carbon Fighter) is excellent for preventing deposit related issues from occurring. 

CF-5 works by protecting the fuel system from harmful combustion deposits - including those exacerbated by now E10 ethanol fuel. It will keep injectors, pistons, fuel intake components and sensors clean and free of damaging deposits and corrosion.

CF-5 helps to maintain and improve performance and mpg.



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BG203E
PN 203
BG203

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BG DOC: Diesel Oil Conditioner, 325ml - PN 112E - PN 112E
1
BG DOC: Diesel Oil Conditioner, 325ml
BG112
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Product Information
BG DOC: Diesel Oil Conditioner
325 ml

BG DOC Diesel Oil Conditioner is designed to condition oil in modern high-output diesel engines.

Modern diesel engines operate at high temperatures and pressures. This puts a lot of demand on diesel engine oils and the additives they contain. Hydraulically activated fuel injectors increase oil pressures and emissions devices increase soot accumulation in oil. These systems test the limits of engine oil. Under the right conditions, heat causes sulphur from fuel to combine with entrained moisture to create sulfuric acid. This acid wreaks havoc on engines, causing corrosive wear and severe damage to engine components.

BG DOC Diesel Oil Conditioner maintains like-new diesel engine power and performance, neutralises acids and acid corrosion, reduces friction and wear on engine parts, stabilises viscosity, prevents sludge through increased oxidation and soot control.

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BG112
PN 112E

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BG EPR: Engine Performance and Compression Restorer, 325ml - PN 109E - PN 109E
1
BG EPR: Engine Performance and Compression Restorer, 325ml
BG109
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Product Information
BG EPR: Engine Performance and Compression Restorer
325ml

A revolutionary formula with proven “ring-clean” technology. BG 109 Engine Performance Restoration is a quick and effective blend of cleaners that will soften, emulsify and dissolve those hard to remove fuel gums that clog rings and will usually do it in 15 minutes or less.

Modern engines operate at high temperatures. Combined with prolonged drain intervals and reduced engine cooling, automotive engine oil is under a lot of stress. Continuous thermal and oxidative breakdown contributes to oil thickening, heat retention and deposit formation. Heavy deposits can impede normal piston-ring function; thus reducing fuel economy, lowering power output, and increasing harmful exhaust emissions and oil consumption. Compression will increase with removal of these deposits.

Safe for use in petrol, diesel and rotary engines.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

BG109
PN 109E

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DISPLAYING 1 to 4 (of 11 products)
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About Fuel Additives

Porsche Fuel Additives - Engine Protection, Performance & Efficiency

Fuel Additives are designed to enhance fuel quality by cleaning, protecting, and optimising the fuel system. In Porsche engines, high-quality fuel additives help maintain injector performance, improve combustion efficiency, and protect against deposits that can reduce power and reliability—particularly in high-performance and high-mileage applications.

Available from Design911, Porsche fuel additives provide targeted solutions for cleaning injectors, improving octane performance, reducing deposits, and protecting vital engine components under demanding driving conditions.

What Do Fuel Additives Do?

Fuel additives improve fuel system cleanliness and combustion quality.

Core Functions:

  • Clean fuel injectors and intake components.
  • Improve combustion efficiency and throttle response.
  • Reduce carbon and deposit build-up.
  • Enhance fuel stability and octane performance.
  • Protect fuel system components from corrosion.

Proper fuel treatment supports consistent engine performance and longevity.

Why Do Fuel Systems Underperform Without Additives?

Over time, fuel systems can suffer from contamination and deposit build-up. Common issues include:

  • Injector fouling reducing spray pattern efficiency.
  • Carbon deposits affecting combustion.
  • Poor fuel quality or ethanol-related degradation.
  • Reduced performance in high-mileage engines.
  • Inconsistent combustion leading to rough running.

Without preventative treatment, these issues can lead to power loss, misfires, and reduced efficiency.

Why Upgrade to High-Quality Fuel Additives?

Performance fuel additives are formulated to restore and maintain optimal fuel system performance.

Upgrade Benefits:

  • Cleaner injectors for improved power and response.
  • Reduced engine knock and improved combustion.
  • Enhanced engine protection under high load.
  • Improved fuel efficiency and smoother operation.
  • Ideal for preventative maintenance and performance use.

Upgrading fuel treatment helps protect engine internals while maintaining peak performance.

Highlights

  • Porsche-specific fuel additive solutions
  • Improves fuel system cleanliness and performance
  • Protects against carbon build-up and corrosion
  • Ideal for high-performance and high-mileage engines
  • Supports reliable, consistent engine operation       

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