Quote Originally Posted by Bio248 View Post
you can switch back and forth all you want. anyone that says otherwise is misinformed.

my opinion: oil is oil is oil. other peoples opinion: OMG ROYAL PURPLE, THEY USE IT IN RACE CARS AND THEY HAVE COMMERCIALS.

seriously, i put relabeled junk store brand oil in my car and it ran like a top.
well unfortunately i do know for a fact working with racebikes and testing different oils on dynos just to sqeeze out every last bit of hp that certain oils are better than others. this is on very high compression motors. per my personal experience with dyno time on HIGH COMPRESSION RACEBIKES (13:1 for example) will yield .07 to .1 hp at the rear wheel and allows for a quicker revving motor. but once again this is on very high compression motors where every last bit of power is needed. i do infact use royal purple on my racebike, but i use non synthetic in everything else.

the biggest debate i found online was if you use non synthetic then the rings seat to a certain slipperyness (if thats even a word), then you add something more slippery then you get oil getting past the rings. i also drive roughly 1800 miles a month