Metal Guard UK | Engine, Fuel & Gearbox Additives – Metal Protection

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Protect Your Engine. Proven in the Lab.

Advanced protection additives trusted by drivers, workshops, and motorsport across Great Britain.

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Engine Care
Engine oil additives and engine flush treatments from Metal Guard UK, designed...

Engine Care
Fuel System
Metal Guard fuel system enhancers provide maximum lubrication for petrol and diesel...

Fuel System
Gearbox
Metal Guard gearbox and transmission additives protect moving metal parts, reduce friction...

Gearbox

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Our Best Sellers

Engine Oil Additive 1L
Engine protection additive for everyday driving.
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Engine Flush 400ml
Maximum-value engine protection with a free fuel additive.
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Injector Cleaner 200ml
Deep-clean your engine before fresh oil.
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Our Bundles

Injector Cleaner + Fuel Additive Set (200ml)
Bundle & save — deep-clean injectors and protect your fuel system in one set.
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Complete Engine Care Bundle
Flush, clean, and protect — a full internal engine service in one bundle.
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