I use this oil in both my '01 660 and my '07 700. It's a great oil IMO and it's not worth it to me to spend the money for Amsoil or the other more expensive brands when I change my oil as often as I do. I've had no issues with Rotella, and will continue to run it in both of my bikes.
'01 Raptor 660: 101mm 11:1 Wiseco, HCII, P&P, Curtis Sparks Exhaust, ProFlo w/ K&N, ACE Fabrication +2+1, JTM, G-Force Extended Axle, Holeshot HD, Holeshot XCR, Haulers, ProTaper SE Raptor Bend, ProTaper Pillow Top Grips, ASV Clutch Lever
'07 Raptor 700: 11.5:1 Tech, X4, Bo White +1 port, +3 TB, Curtis Sparks Exhaust (shortied), FCI w/o box, PC3, FullFlight +2+1, G-Force Extended Axle, Holeshot HD, Holeshot XCR, Haulers, Fasst Flexx, OURY Grips, ASV Shorties, Jogaca Suspension work