CASTROL Classic Valvemaster 0.25 Litre

• Valvemaster provides the best protection against valve seat recession after lead, while keeping your fuel system clean and providing excellent corrosion protection. Particularly suited to older vehicles with a compression ratio less than 8:1. Should only be used in vehicles that are not fitted with a catalytic  converter.
• All products in the Valvemaster Fuel Additive range contain Etha-Guard. Etha-Guard counteracts ethanol's hygroscopic nature, preventing moisture and damage to your fuel system, stabilising E5 & E10 petrol.
• 2 in 1 formula *Valvemaster lead replacement: Ultimate protection against valve seat recession. Protects your engine under all driving conditions. Reduces knocking.
• *Etha-Guard ethanol stabiliser: Enables use of E5 & E10 petrol'. Prevents corrosion in fuel systems. Prevents acidity in ethanol fuel. Keeps fuel system clean. Protects your vehicle in use or storage; also prevents damage to fibreglass fuel tanks.