Engine & Fuel Systems

STP® has everything you need to keep your car running to its full potential. Explore STP® engine and fuel system products from fuel and oil additives to octane boosters, motor oil and more.

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Petrol Injector Cleaner

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Engine & Fuel Systems

Diesel Injector Cleaner

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Engine & Fuel Systems

Oil Treatment for Petrol Engines

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Engine & Fuel Systems

Oil Treatment for Diesel Engines

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Engine & Fuel Systems

Emissions Reducer – Petrol

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Engine & Fuel Systems

Emissions Reducer – Diesel

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Engine & Fuel Systems

Complete Fuel System Cleaner – Petrol

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Engine & Fuel Systems

Complete Fuel System Cleaner – Diesel

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Engine & Fuel Systems

Diesel Particulate Filter (DPF) Cleaner

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Engine & Fuel Systems

Ultra 5-in-1 Diesel System Cleaner

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Engine & Fuel Systems

Oil Treatment for Gearboxes

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Engine & Fuel Systems

Diesel Stop Smoke

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Engine & Fuel Systems

Start-Stop Petrol Engine Cleaner

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Engine & Fuel Systems

Start-Stop Diesel Engine Cleaner

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Engine & Fuel Systems

Power Booster

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Engine & Fuel Systems

Diesel Winter Treatment with Anti-Gel

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Engine & Fuel Systems

Diesel Treatment

Petrol Winter Treatment with Water Remover

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Engine & Fuel Systems

Petrol Winter Treatment with Water Remover

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Engine & Fuel Systems

Petrol Treatment

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Engine & Fuel Systems

High Mileage Diesel Injector Cleaner

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Engine & Fuel Systems

Engine Flush

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Engine & Fuel Systems

Ultra 5-in-1 Petrol System Cleaner

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Engine & Fuel Systems

Ceramic Oil Treatment

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Engine & Fuel Systems

Synthetic Oil Treatment

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Engine & Fuel Systems

Smoke Treatment

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Engine & Fuel Systems

Engine Stop Leak

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Engine & Fuel Systems