generator oil change?

Old 11-15-11, 12:54 PM
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generator oil change?

Hi, I'm wondering what the experts recommend for oil change intervals on an emergency generator that sometimes isn't used for 2-3 years? The last time I had to use it, I think it ran for a total of about 8 hours. I seem to remember reading something about oil that's not in a sealed container "oxidizing" over a long period of time. I've been putting stabilizer in the gas and draining it if it sits too long
(how long?), and I try to run it with a load once a year.
Any advice? Thanks, Steve
Old 11-15-11, 01:14 PM
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From my knowledge is drain all the gas and run it dry.

Change the oil using synthetic oil.

Pull the plugs and squirt some fogging oil in there and turn it over so the motor is on the compression stroke. This assures the valvse are close to prevent rust from condensation.

That about all I would do.

Then run it once a year and change the oil once a year if the gen is used or not.

Mike NJ
Old 11-15-11, 03:59 PM
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I never worry about changing the oil in my stuff that sits unused until it has enough hours on it to warrant changing it. Inside a crankcase is close to a sealed container. The crankcase breather has a valve that keeps air from freely circulating through the engine when it isn't being used. It's pretty much sealed. If you're using synthetic, there is even less reason for concern. Spend the effort on the fuel system instead, as that is where the problems arise when storage issues occur.

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