Sodium replacement for lead in petrol giving excellent valve seat protection under most arduous conditions. Containslubricants to protect valves and valve guides and high temperature detergent for fuel system and upper cylinder cleanliness. Allows all engines to run on unleaded fuel. Safe with catalytic convertors. Endorsed by Federation of Historic Vehicle Clubs.

As used in our race cars - proven in tests to be the best for your engine!

355ml bottle treats 400litres