Generator Oil June 11, 2024, 06:36:34 pm Just performed the annual oil change on the installed Onan generator (even though it only had about 20 hours on it since last year). I need to buy some more oil and had been using OnaMax but will any good quality 15W-40 suffice?
Re: Generator Oil Reply #1 – June 11, 2024, 08:18:39 pm Oil is oil.I use the cheapest oil I can find.
Re: Generator Oil Reply #2 – June 12, 2024, 08:28:08 am any 10W-30 oil is best all around for most climates.
Re: Generator Oil Reply #3 – June 12, 2024, 05:38:59 pm I use 10-40. I can use it in my RV engine, my generator and my motorcycle.I usually get house brand from wherever I go.O'reilly's has some for a decent price.