“After giving my DL 1000K4 a front to back major service and upgrades, I decided to give a full synthetic a try at least once. The first and second upshift has always driven me nuts. …Having never read any negative postings regarding the use of Amsoil MC specific on the Vstrom forums, in it went to see if the shifting improved. …I noticed minor improvement but basically was unimpressed.

I dropped the Amsoil early with filter and refilled with Royal Purple’s Max-Cycle 10W40 and a new filter. …This was the Strom’s last chance for improvement before …switching back to Motul. …Royal Purple was like night and day regarding the first to second upshift!! …Very noticeable improvement. …Hats off to a superior American product!!”

—Jim Blose, Edmonton, AB, Canada

“My instructor continuously told me about Royal Purple and its benefits. …[Previously] I was averaging 29-31 mpg and went 343 miles on one tank in my Hyundai Elantra.

About a month after I switched to Royal Purple 5W30, I went 390 miles and still had a gallon and a half left.

…Talk about saving money with these insane gas prices!

The engine is also running 10-20 degrees cooler. …All I can say is that you’ve made a great, if not the greatest, product ever introduced to the automotive world. Thank you so much!”

—Kent Green, automotive service vocational student