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.