Why is there lead in it? (LL Avgas)
Votes
Answered By AOPA
Why is there lead in it? (LL Avgas)
1 Replies
Votes
AOPA Staff Answer
Tetraethyl lead (dissolved lead) helps to increase the octane rating of gasoline.
This rating indicates the gasoline's resistance to detonation, a destructive combustion type that occurs in engines under heavy load and high temperature conditions.