My son was at the parts store yesterday and they asked him if we had adjusted the engine to compensate for not having leaded gasoline.
I never even thought about it....
He has a '62 with a 235. What, if anything, can we do to the engine? Or do we need to get a gas additive?
IIRC the leaded gasoline was important for the life of the valves. Did it serve any other function?