what oil to use

Funny Ace I wasn't dealing with any myths about engine oil or even knew there could be a problem until I was told by a Shell oil refinery chemical engineer (also a mopar maniac) that the Shell oils were changing. It wasn't until I started researching on the internet that all these so called experts started popping out with there so called theories and alot of it was BS.
It comes down to one basic fact, when your engine has survived and thrived on an oil with a specific additive package and you find that the package is dramatically changing, for what ever reason, I'll switch to an oil that still has the original package. The BB high lift cammed, double valve springed animal under the hood of my Demon likes the original package and when it's happy I'm happy.

Terry