i havent done any research on the rotella, other than from hearsay, but it seems like its made for heavy-duty trucks...i was gonna put some in my car the other day but i opted not too this time around.. if ur just the average rider you can get between 4-5k on a synthetic oil change, less if ur doing trackdays or racing..dont listen to the ppl that tell you to change it every 2k with synthetic, complete waste of money! (unless ur at the track) Oh and go with a Pure1 filter, half the price of OEM.