Quote:
Originally Posted by j4c11
Any issues running synthetic 10w-30?
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So,
j4c11, Years ago some guy at a small engine shop told me that full synthetics were no good in air cooled engines as they coated the cylinder walls, reducing their cooling ability so I have always stayed away from them for that purpose. I use Mobil 1 full synthetic in my work van, Shell Rotella in my big truck and have always used a quality 30 wt in air cooled stuff. Then I found this;
“After approximately 50 hours were obtained on my Kohler, I switched to Mobil 1, 10W-30 synthetic oil. The chrome top compression ring on a cast iron bore takes a while to break in properly, and 50 hours is considered about average. A pure synthetic lubricant in an air-cooled engine is ideal, mainly due to the higher oil temperatures these engines generate when compared to their liquid cooled counterparts. The synthetic maintains a more stable viscosity and offers higher film strengths at temperature plus superior dispersant and detergent additives.”
From here;
http://www.kirkengines.com/downloads...hlerPartII.pdf
So it’s kind of an experiment.
p.s. that “some guy” from years ago, he went out of business.