Lead additive question...

Whats your opinion of it? Do you use it or not?

 

I do not, but I have many customers with pre WWII cars that do, depends on quality of block materials and valve construction, high nickel blocks and heads with sodium filled valves usually do not need additive.

 

I used it on my 60 chevy with the original 283, ran fine, I heard some other people I know used said it ran better with out it..

Id try it, if it runs good with it Id keep using but if not than I guess dont use