quote:Even if a suitable polyol ester-based engine lube were available, I doubt it would have a favorable cost/benefit ratio when compared to modern conventional engine oils. While a jet aircraft turbine has a lot of problems to solve, piston ring blow-by is not one of them. Part of the job of automotive engine oil is to handle the crud that sneaks into the crackcase from the combustion chamber. Because of this blow-by, there is are limitations of how long you can extend the drain interval in this application.
Definitely. Most of the conventional oils these days are pretty good.
Redline is the only company using significant amounts of Poly ester base oils. A niche product.