PENN GRADE 1, 71446, Synthetic Blend High Performance Oil SAE 10W-40, 1 Quart (12 Pack)

I think this is hands down the best oil for an older engines with flat tappet cams. I run nothing else in my old VW. It's expensive, but you don't have to use any additional additives. It is ready to use as is.

Don't use additives in your flat tappet engine, they give a false sense of security. Brad Penn 1 is engineered with a higher ZDDP content, plus, unlike V1 racing, it has the necessary detergents and anti-corrosive properties and can be left in the car for more than 3 months or 1000 miles. I've run mine 2000 miles now in a 1976 Corvette 350/350 with almost no discernable discoloration of the Brad Penn 1. I pulled off the valve covers and there is a nice thin film of clear green oil, and no sludge, absolutely clean!!!! Love it. Buying it by the case, it's almost as cheap as a decent standard type oil. I don't know why people pay megabucks for Amsoil or Royal Purple, Brad Penn 1 is a hidden gem. No leaking either, so even though my seals are not the newest, this oil is staying put. I'll only be using this from now on, and will gladly run it in my 425HP solid flat tappet 351C-4V.

Best oil with zinc additive!

I use this oil for a 66 mgb roadster 1800 cc motor. This engine is old school and I treat it that way. A little expensive but worth it . The best

Brad Penn oil is great. as a engine builder that races, the oil is the blood of the motor. when you pull the valve covers from a brad penn oil motor, the sticky green oil is coated on everything. visually, i imediately know that the oiling system is working great and the high Zinc is protecting wear. its the only oil i use in my race engines.

used it before good stuff, for older engines that need zinc, got an fe bb ford. works fine

The oil has zinc other oil doesnt

If you have a 60’s - 70’s classic car with its stock engine, then you need Penn Grade 1 motor oil. This oil has the ingredients necessary to protect the cam, tappers, pushrods etc.. from friction. The oil used in modern cars won’t protect your classic.