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SKU:87599236
Royal Purple Max-Cycle 10W-40 High Performance Synthetic Motorcycle Oil is specifically formulated to exceed the demands of highly stressed engines and transmissions. It is recommended for use in both air-cooled and liquid-cooled 4-cycle engines and is compatible with wet-clutch transmissions. Formulated with select synthetic base oils and Royal Purple's proprietary Synerlec additive technology, Max-Cycle provides improved film strength when compared to the leading synthetic and mineral oil. Its shear stability and oxidation resistance promote greater performance and protection. Max-Cycle exceeds API/JASO new warranty requirements and is compatible with other mineral and synthetic motor oils. No flushing is necessary prior to use.
Formulated With Proprietary Synerlec Additive Chemistry Providing 3X To 4X The Load Carrying Capacity Of Other Synthetic Engine Oils
High Film Strength Protects Buckets, Crankshafts And Reduces Piston Scuffing
Superior Rust And Corrosion Protection
Cooler Operation And Less Parasitic Power Loss
I am not one to write reviews but this is an oil worth commenting on .Bike:98' XR650lType: Air Cooled single cylinderMods: Piped , 10.5/1 100.5 (675cc )piston , ported, Hot Cam , FCR bored to 42.5 pumper carb , High Flow K&N oversize filter(air box removed) XR400 oil cooler , custom 1" valve cover caps(for cooling),Environment: Desert 3k' Altitude , 105+ summer temps, freeway 75~80mph , off road with loomy sandwashes etc ,etcComment / experience :I have owned XR600s & this 650 in one form or another for over 20yrs. Many claim this motor to be "bullet proof" but that is to say the same of a lawn more that produces well below its power potential. Stock power on this/these bikes is near painful and barely acceptable at best . Modifications came on to alleviate this . As a machinist I embarked on modifications that would bring this dull motor to life. A 25% power boost across the power band should prove satisfactory . 75mph , 105 degree days made for 300+ deg oil temps on short 15 mile trips . Top end Rebuilds were a 5k (or less) occurance . Good power , expensive to maintain. Installed oil cooler , oil return and feed lines were wrapped this bought oil reservoir temps down to 250 degree on 25 mile freeway jaunts. Rebuilds now at 7~10k. Cams and lifter gauling were the biggest issue. Oil temp measured on the valve train were oftentimes 250~300+ . I "inherited" a case of Max Cycle 10-40 and decided that after the last rebuild this would be the oil to test . Right away I noticed the engine felt "freer" , if that make sense. A top end inspection at 1500 miles revealed valve train components with , what seemed, no wear . With this , I decided to keep this oil as the oil of choice on this bike to continue my testing . Changes are at 2500 miles . We are currently on the back side of 4500 miles on this test . Observed Oil temps have been 210~225 on searing 105 days with 250 oil temps on sand-wash full power applications . Oil consumption has been below average and the engine seems quieter.Conclusion: This Oil is pricey but like a good steak , its worth it if its good. One rebuild will pay for several cases . More to follow . The rant is long but I tried to be as factual as possible. Hope it helps others out there with similar issues.
