The only product I know of that has what “old” gas had to provide higher octane is Octane Supreme. It has tetraethyl lead. I successfully used it on a high compression high advance 70s V12 with great success. I was able to maintain the factory advance rating which wasn’t possible w/o 98-100 octane.
it’s a cheesy looking website and label... but the real McCoy. Google it; best deal was on EBay. More economical and easier to find than high octane pump gas, at least for me.
Hope that helps.
it’s a cheesy looking website and label... but the real McCoy. Google it; best deal was on EBay. More economical and easier to find than high octane pump gas, at least for me.
Hope that helps.