Onan BFA Oil - Why not 20W-50?
Note: Our typical camping climate range runs from 10F to 115F (if we go to Redding, CA in the summer... otherwise up to about 105 in Southern Oregon.) Clearly Onan/Cummins have updated their recom...
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Fwiw Im using the oil ranked now #11 in my onan 5500. **** thing spins like it has a 6v starter and runs smooth as silk. Think it was 21 bucks at wally with a 10 buck rebate online for 4 or 5? qt jug. So $13.
