Tetraethyl Lead is an anti knocking agent in fuel. Avgas still has lead!!! There are some additives around??
I Googled high octane additive, this and it will help Phil Matheson SAAA Ch. 20 VH-PKR Australia EMAIL: phillipmathe...@bigpond.com KR Web Page: www.philskr2.50megs.com http://www.vw-engines.com/