Take a few minutes to read this
https://www.onallcylinders.com/2018/...to-save-money/
take it for what its worth, was probably written by a company that makes high
zinc oil, but it does make sense. There are some good hotrod oils that are really cost effective, and I found that buying the
oil and additive separate was more expensive. Comp Cams makes a good high
zinc oil, I run the 10w30. Lucas makes a Hot Rod oil that's good as well.