Specs for maintenance on Onan QG 3600 LP generator?

TomAR

Senior Member
Joined
Sep 10, 2017
Messages
145
I'm getting ready to do the basic maintenance on my Cummins-Onan RV QG 3600 LP generator, Model: 3.6KY-269120R, Spec: R.
Cummins lists the parts needed (air cleaner 0140-3280, spark plug 01267-0275), but two oil recommendations: 10W30 or 15W40.
Question #1 - which oil is better for year-round camping? We'll be hitting both Arizona summers and Colorado winters.
Question #2 - Spark plug gap - 0.025" is listed, but I found a reference (partsfortechs.com) that specifies 0.020" for LP 3.6KY and 3.3KY gen sets. They also said torque to 13 lbs-ft. I couldn't find this info from Cummins. Seems like good info to me; any disagreement?
Question #3 - Most genny MX kits include a fuel filter. Not for LP Propane, right? Duh!
Question #4 - What size spark plug socket do I need?
I've read that a socket set universal joint is VERY helpful as well.
Thanks,
 
Last edited:
There are only minor viscosity differences in any of these motor oils. 10W-30 is a universal grade oil and what I'd use. Or 5W-30 as startup is the time with most engine wear. Full synthetic of course.

If you want to keep track of the condition of the engine consider an oil analysis which will be either reassuring or terrifying. :) Blackstone Laboratories.

-- Chuck
 

Try RV LIFE Pro Free for 7 Days

  • New Ad-Free experience on this RV LIFE Community.
  • Plan the best RV Safe travel with RV LIFE Trip Wizard.
  • Navigate with our RV Safe GPS mobile app.
  • and much more...
Try RV LIFE Pro Today
Back
Top Bottom