Fuel additives for classic and older vehicles running on today’s E5 and E10 petrol.

Classic Valvemaster (formerly Castrol Valvemaster) and Valvemaster Plus are lead replacement additives for early vehicles designed to run on leaded fuel, protecting against valve seat recession.

Classic Etha-Guard Plus stabilises E5 & E10 ethanol petrol and is compatible with catalytic converters — for younger and modern classics that do not need valve seat protection.

Not sure which one you need? Send us the make, model and year and we’ll recommend the right additive.