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When extreme overheating situations exist, oxidation is rampant. The only cure for oxidation is changing the oil. Extreme heat indicates the need to change your oil more frequently.
Your fossil oil's effectiveness in lubricating drops off once its temperature increases beyond 250" F.
Oil Oxidation Rate Chart
When observing the accompanying oxidation rate chart, it will become readily apparent that heat is the enemy and must be controlled. With heat comes oxidation of the oil and the only cure for this is to change the oil. When extreme overheating situations caused by improper tuning or a brutally hot summer day exist, oxidation is rampant, so change your oil more frequently.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.