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 ...
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Interesting, when I asked the guy at Camping World what was so special about Onan oil, he told me it was non-detergent.
I was going to go with Rotella 15W-40.
I was going to go with Rotella 15W-40.
