This is an oil that is becoming increasingly hard to find as less and less dealers and online distributors are supplying it and even those who are can’t beat the price MotoSport.com sells it for. This is one of the highest performing oils available with protection for starting cold (“10W”) and and also one of the highest levels of protection available for running at light temperatures (“50”). This is especially well suited for my bike and style of riding as desert racing and trail riding for long extended periods of time in hot temperatures and often time at slow speeds (in tight technical trail sections) where there isn’t enough airflow for the radiators to effectively cool the engine making it very important to have this higher temperature rated oil.
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H1r in my 2 stroke and .thumper in my 4 stroke. Best there is
Always use, always excellent
I ride a 2008 KTM 525xc, and it is pretty picky about the type of oil and amount it has in the engine. It does make a difference. In the past i usually just poured whatever 10w50 i could find in it, and it did its job just fine. This oil, however, stood out immediately. I noticed that my engine runs a little better, smoother, with this oil. It's worth the few extra bucks.
There have been no questions asked about the Bel-ray Works Thumper Oil.