Quote:
Originally Posted by texaswiz
In Tejas, dino oils tend to break down at the higher temps that v-twin air cooled engines typically run at in the summer.
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Hmmmmm....a friend of mine just came back from MMI-Harley school in Arizona. All they run in their bikes is straight 50wt. No issues in the desert....
I agree that Synthetics don't degrade like Dino oil does, because they have a higher flash point and the molecules don't shear as easy.
Quote:
Originally Posted by XDixiecratX
Ok anything wrong with a quart and a half of 20w-50w and a quart and a half of straight 50w , or is it better not to mix oils
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It's fine. Guys at another forum I go to mix, including straight weights. Most of them have 70K+ on their bikes...
Stick to same-brand oil when you do it.
However, if you mix 50wt with 20w50, why not just run straight 50w in the summer?
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