Inliners International Forums General Discussion Engines Hardened Valve Seat Inserts and unleaded fuel . . .

Ray, what I posted was the result of a cursory google search. I don't doubt your sincerity. However, its pretty tough to conclusively prove anything without a control group and a controlled environment. If (what appears to be)the UK's version of our Federal Trade Commission says that a company can't make these claims, well...