Fuel system cleaners for petrol & diesel engines

Dirty injectors, carbon deposits in the combustion chamber, and contaminated fuel lines quietly rob your engine of power, worsen fuel economy, and — left long enough — cause MOT emissions failures. XADO's fuel system cleaners are formulated to dissolve and remove these deposits during normal driving, restoring injector spray patterns and combustion efficiency without any mechanical intervention.

Which cleaner do you need?

Not all fuel system cleaners do the same job. Here's a quick guide:

• Diesel injectors & fuel lines — AtomEX Diesel Multi Cleaner cleans to technical-purity level, removing varnish and carbon from the entire fuel circuit
• Petrol injectors & combustion chambers — AtomEX Petrol Multi Cleaner restores spray patterns and removes deposits that cause rough idling and high HC emissions
• Blocked or warning-light DPF — AtomEX DPF Cleaner & Restorer lowers soot burn-off temperature to help the filter regenerate without removal
• Catalytic converter & MOT prep (petrol) — XADO RED Cleaner decarbonises the combustion system and cleans the cat ahead of an emissions test

Common signs your fuel system needs cleaning

• Rough idle or engine hesitation
• Reduced fuel economy (more fill-ups than usual)
• Loss of power, especially under acceleration
• DPF warning light or frequent regeneration cycles
• Failed or borderline MOT emissions reading
• Black or excessive exhaust smoke

If your car has recently failed its MOT on emissions, see our detailed guide: Car failed MOT on emissions? Here's why — and the fix.