Whats so special about Onan generator oil
Just doing a service on my generator (5500 Marquis model 5.5HGJAB-1038D). Bought plugs and filter, but they wanted $15 a quart for the Onan SAE 15W-40. Thought maybe I could just get it cheaper at an ...
Forum Discussion
Aeroshell has a spectacularly low ppm residual ash content. Pretty much 0.0% sulfur content. The "T" grade of Rotella is small batch (kettle) oil and is made with superior base stock and precisely measured additives. It is better oil than plain Rotella. I learned a lot when I worked in Shell's "Compound House"
