Back in the 70's, when I was an SCCA member and attempting to race my Austin-Healey 100/6, we had a local engineer give a presentation on engine oil (for racing)...One interest thing I still remember was that aviation engine oil was additive-free...because aviation engines were total-loss systems and additives served no purpose...
Doesn't contribute anything useful to this thread, I know...just some of that useless information that is taking up space in my overcrowded memory...
