Originally Posted By: 2cool
FWIW, I and many more have run all manner of OPE on 15W-40 for years with no ill effects. If that oil can take the heat of a diesel with turbocharging, a small displacement gas engine is a walk in the park. IIRC, they weren't very picky on oil, but I changed it so often it probably didn't make much of a difference.
I use an hdeo in everything I own that's air cooled in the summer including my Harley and they perform flawlessly and are cost effective.
Unless I'm extending the drain interval I use conventional hdeo's,including my Harley. My vehicles all get synthetics. My compressors,generators,Harley all get conventional and run a moderate interval. Roughly 100 hours on the equipment,3000 miles on the significantly modified Harley.