Castrol Valvemaster Lead Additive

Castrol Valvemaster lead replacement fuel additive for use with lead-free fuel.

The best protection after lead against valve seat recession, Valvemaster's unique phosphorus formula protects your engine under all conditions

Etha-Guard ethanol stabiliser combats the harmful acid  effects of ethanol fuel and  prevents corrosion in the fuel system.

Use with E5 or E10 ethanol blends. 250ml treats 250 litres