diesel oil alternative?

Very good article by Joe Gibbs Driven Oil chief "tribologist" Lake Speed Jr.

All about oil: Lake Speed Jr breaks it down

I attended an amazing oil seminar put on by him.

The Joe Gibbs Driven Oils have had some serious research and development in 10000 RPM flat tappet camshaft engines.
I recommend the oil seminar by Speed Jr.... great use of your time.