SF versus SL 10W-30 oil.

Toller · 2007-06-13T02:34:31+00:00

My understanding is that you have to use motor oil that "at least" meets the auto manufacturer's requirement, but would that be true for a generator also?I got my Yamaha EF1000 today. The instructions call for SE or SF oil; all I had was SL. Is there any reason that might not be okay?I know, "Call Yamaha". I had to call them three times to verify that a claim made in one of their retailer's ads (that it will do 3500w for 3 seconds) was accurate; I doubt I can actually reach anyone there who knows what oil is. Not that Yamaha doesn't know what oil is; they just don't let those people talk to customers.Thanks.

Jun 13, 2007 22 Replies

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Toller 19 years ago

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Steve Barker 19 years ago

I've seen the same symptoms with QS.

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KC 19 years ago

Conversly, I rebuilt a Chevy 350 that had been run on Havoline for 90k miles. It was shiney inside with little-to-no sludge. Guess that's why the oil looks black after 500 miles - it's really collecting those deposits.

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