Oil For Generator

[ernest917]

Anyone know what kind/weight oil needed for a Generac Guardian 7500 generator ???

[fonzie]

http://gens.lccdn.com/generaccorpora...e.pdf?ext=.pdf

[ernest917]

Had to jump through all sorts of hoops, including calls to Generac and then AP Electric and then give serial # of unit to finally find out it needs 10W30 oil... Good grief.....

[beipers]

You're running different oil than the Cummins?

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[ernest917]

Guess so.... They used my serial # and looked up all info for my gen.... Gave me filter # as well.....

[speedmerchant]

I run 15w40, same as the coach, but I only use the Berk in the spring summer months. That would be too thick of an oil for cold weather.