Own a 2015 KTM Super Adventure 1290 LC8 engine. First oil change at 600 miles, added Mobil 1 10w-40 race oil. Noticed a "little" more upper engine rattle, decided to drain it at 2600 miles. Added Mobil 1 v-twin 20w-50, preceive "maybe" a slight bit less rattle or cam noise in upper engine which...