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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://design91.uk/images/schemaLogo.png https://design91.uk/images/schemaLogo.png +443456003478 https://design91.uk Facebook Instagram
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Porsche > Boxster 986/987/981 (1997-2016) > Boxster 987 S 3.2/3.4L 2005-08/08 > Accessories >

Additives & Boosters

Additives & Boosters

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DISPLAYING 17 to 18 (of 18 products)
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Power Maxed Stop Leak & Slip Treatment 325ml
1
Power Maxed Stop Leak & Slip Treatment 325ml
Special Offer
PMASL
Product Information
Product Information
Power Maxed Stop Leak & Slip Treatment 325ml

Stops fluid loss from automatic gearboxes by counteracting the effects of seal shrinkage. Active seal conditioners remain in the system helping to prevent future problems and ensure smooth operation.

Benefits & Features:
• Stops Auto Gearbox Slip
• Replenishes Rubber Seals
• Reduces Fluid Consumption
• Improves Gear Change

Directions of use:
Add contents to gearbox via filler cap or dipstick opening.
Torco Unleaded Petrol Accelerator - 32oz (945ml) can
1
Torco Unleaded Petrol Accelerator - 32oz (945ml) can
Special Offer
F500010T
Product Information
Product Information
Torco Accelerator is not just another fuel additive, it's simply a Race Fuel Concentrate!

With many of the same additives our winning race fuel possesses, Torco Accelerator is a blend of components which will transform the make up of premium pump gas to closely resemble race fuel.

Torco accelerator will lower the end burn temperature which will make fuel burn more complete thus releasing all of the power that your engine has to offer. Efficiency equals horsepower! All this while raising the octane of your fuel. Un-chain yourself from the drum!

Mix a 32oz (945ml) can of Torco Accelerator to 10 gallons of 91 Premium Unleaded to make an efficient 102 Octane race fuel, mix with 5 gallons of Premium Unleaded to make whopping 105 Octane.

Accelerator is unleaded, so it won't harm sensitive O2 sensors or catalytic converters.

OFFROAD USE ONLY
DISPLAYING 17 to 18 (of 18 products)
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About Additives & Boosters

Unlock your Porsche’s full potential with fuel additives and boosters from Design911. Our range includes performance-enhancing fuel treatments, injector cleaners, octane boosters, and system protectants designed to maintain optimal engine performance. Whether you’re improving combustion efficiency, restoring power, or protecting your Porsche’s fuel system from carbon build-up, our premium additives deliver results trusted by professionals and enthusiasts alike. Perfect for both classic and modern models, Design911 fuel additives ensure your Porsche runs cleaner, smoother, and more efficiently.

Fuel System Cleaners
High-performance fuel system cleaners that remove carbon deposits and improve injector performance for smoother engine operation and better fuel economy.

Octane Boosters
Premium Porsche octane boosters designed to enhance combustion, prevent knocking, and increase engine responsiveness under high-performance conditions.

Engine Protection Additives
Protective fuel additives that prevent corrosion, reduce wear, and extend the life of your Porsche’s engine and fuel system components.

Diesel & Petrol Treatments
Comprehensive range of Porsche-compatible fuel treatments for both petrol and diesel models. Improve efficiency, reduce emissions, and restore lost performance.

Fuel Stabilizers
Additives designed to keep stored fuel fresh and stable, ideal for Porsches used seasonally or in storage. Prevents varnish and deposit formation.

Professional Workshop Additives
Workshop-grade fuel additives formulated for maintenance, diagnostics, and performance testing — trusted by Porsche specialists and tuners.

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