Forum Discussion

Powerstroke2000's avatar
Jun 14, 2015

Onan Generator in 996 Arctic Fox...how to?

I have a 2010 Arctic Fox with the LP 2500 Onan Generator, and I thought today would be the day I'd do my first oil change! Couldn't find a lot of support online regarding this particular unit, so my first thought was to see if there may be here!
First, I'm unsure if when 'checking' the oil in the generator, if it is with the cap screwed in, or just sitting at the top...before screwing in?
I have 42.0 hours on my Onan...and I thought that is probably WAY too early, but I bought it in 2012, and it's never been serviced, other than at the dealer (possibly) when I bought it. Checking the oil, it's perfectly clean, as in just as clean as any oil you'd find when pouring out of a new bottle! Perhaps I don't need a change?
I checked the air cleaner, and it too has very little dust, but I did blow it out with my compressor, and little to nothing came from the air filter, and holding it up to the sky, LOTS of light still shows through the filter media all the way around it.

I realize, running with LP, it may be a very long time before oil may get dirty (have had a vehicle in the past running LP) so I'll assume it's fine to continue running it as it is?
As you can probably tell, the Generator doesn't get used all that often, and it always starts and runs just fine. Works hard when the Microwave is on...otherwise just hums along nicely. Kind of wish it where a little quieter, but other than that..no complaints.

I live in the Pacific Northwest, so with the moisture we get up this way, it makes me wonder if I should change the oil anyway?

Any thoughts/comments/advice would be welcomed. Thanks!
  • arto_wa wrote:
    donn0128 wrote:
    It's a pretty small package. Might be fastest and easiest to pull it completely out service it and reinstall.




    No need to pull out the generator for oil change- just drain & refill!


    Per Onan MicroLite 2800/LP2500 manual:

    1. First oil change after 20 hours.
    2. After that, every 100 hours, or once per year.
    3. Insert the dipstick, but do not screw it down for oil level check.

    Cheers


    Interesting
    My manual advises to screw it in to check. LP has no filter and takes just under 1 qt. I'm in AZ and use 10w40 in the summer and switch to 10w30 in the winter so it gets changed twice a year. Only 136 hours on the unit.
  • donn0128 wrote:
    It's a pretty small package. Might be fastest and easiest to pull it completely out service it and reinstall.




    No need to pull out the generator for oil change- just drain & refill!


    Per Onan MicroLite 2800/LP2500 manual:

    1. First oil change after 20 hours.
    2. After that, every 100 hours, or once per year.
    3. Insert the dipstick, but do not screw it down for oil level check.

    Cheers
  • 3 years is a long time for oil to stay in the engine, even if it is not run very much. Yes moisture could be a problem, as condensation in the engine will land in the oil.

    I would go ahead and change it, probably only going to be about 2 quarts of oil anyway. Problem seems to be reaching the oil drain point, and getting a funnel into that area to collect the oil. It might take a baking sheet pan, or something to get it out? That would be better than removing the entire generator - at least part way to get below the oil drain.

    I would be putting in synthetic oil, as it will be durable for the next 5 years, or 150 hours of run time. . It will be less likely to absorb moisture from letting it sit.

    Good luck,

    Fred.
  • It's a pretty small package. Might be fastest and easiest to pull it completely out service it and reinstall.