Amsoil is always a safe bet.
We recently picked up a 1969 Mercury Cougar that was running poorly. Turns out it had wiped a cam lobe, probably due to running the wrong oil for the flat tappet camshaft. Went with comp cams cam, lifters, valve springs and retainers and their break in oil to preserve the warranty. There is even some discussion about breaking in the cam with low tension valve springs and then swapping the rap ones in - what a pain- but we were on the safe side of valve spring seat pressure and didn’t have to do that. After the break in, my son elected to run comp cams new muscle car oil as he figured they must have done their homework on what keeps their cams safe, and keep a warranty channel open if necessary.
COMP Cams® - Lubricants
COMP Cams® - Lubricants
