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
Some Onan oil is SAE 10W40.
Some is straight 30 weight.
Any good quality oil will work. I use Castrol 15W40
I do dot see why you Rotella should work.
Some is straight 30 weight.
Any good quality oil will work. I use Castrol 15W40
I do dot see why you Rotella should work.
