Onan 5.5 oil
Despite what the owner's manual says, which oil and how often for the Onan 5.5 This is my first oil change. Thx in advance. Johnny
Forum Discussion
I use Rotella in mine. The same as my truck so it is easy. Once a year works for me. I fun my Onan for at least 1 hour under load every month during the times I'm not really using it. It has never failed me.
