What's the best oils for tappet cam engines?

Rat Rod, that is what the Brad Penn rep told me, straight up. All modern grade oils have absolutely NO zinc in them, aside from diesel grade oils, which don't have as much as the needed 1500ppm. Even the regular Brad Penn stuff has none in it for modern engines. You want the green stuff (Penn Grade)...

I don't like modern oils because of the high detergents. Not because of the lacking additive content. If I could just add ZDDP, I'd do it all day long, but unless I can find a crude or Group 2 or Group 3 Synthetic base stock oil with low detergent, I'll never do it again.

As for Mobil 1;

Mobil 1 USED to be a Group 2 synthetic base stock that had a great formula additive pack with lower detergent levels, up until sometime early this century. The year escapes me. Castrol Syntec also used to be great stuff, when it was green. It was a Group 3/ Ester as a base stock. Even better than Mobil 1 was. The only oils I know of that use Ester as the base stock now, which is an additive to other true early gen (group 2) synthetics (Royal Purple) is Redline and some lines of Motul. Syntec is now the same story as Mobil 1. Crude base stock with ester and other additives with modern zinc levels and plenty of detergents.

The reason I went with OG Kendall GT1/ Brad Penn is because of it's consistancy and formula. They haven't changed a thing, since it was around in the seventies, because it works great.

I'd also like to see my money going back into a smaller company, if I can help it. They were extremely helpful and informative, when I paid them a visit.

I'm going to give the Lucas 30 weight break in from Summit a whirl for the new cam in the fresh 318. Thanks to Skrews for posting the link and mention, elsewhere. Stuff was cheap.

Also, for what it's worth, one of the more interesting pieces to the conversation I had with the Penn rep, was that he was saying that they are running into a new problem now with high ZDDP oils, in that, they are too high and the companies were getting reports of rust, because Zinc is a corrosive metal. He said the goal for the formula is always 50ppm around 1500 per batch, for the magic number.

Brad Penn also makes trans oils that are soft metal safe and other stuff that I may look into.