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.