I like both Amsoil and Motul 300V. Motul 300V seems to hold better than Amsoil. I was able to run it for 5000 miles and the shifting was still good. Amsoil lasted 3000 miles and the shifting went back to normal i.e a little clunky/noisy. My bike is burning some oil and I have been thinking about going back to non synthetic but just the way the motor runs on Motul is worth the price, even if I have to change the oil every 2500/3000 miles.
2006 Ebony Black ZX14, Flies gone, Power Commander V, Brock's CT-Single, Brock's Street/Race Map, Schintz Racing Flash, Brisk Racing Spark Plugs, BST Wheels with World Bearing Ceramic Bearings, Scott Rotary Steering damper, Ohlins KA544 shock, FPK Ohlins kit, Brembo GP4 RX Calipers, Brembo RCS 16, Brembo RCS 19 with no Drag Half Lever, Spielger Front and Rear Brake Lines, Braketech Axis Cobra Front Rotors, Galfer Rear Wave Rotor, Shorai LFX21A6 battery, Sato Racing frame sliders, Zero Gravity Racing Screen/MRA double bubble Racing Screen, Rizoma universal lux billet grip, Rizoma Next Fluid tanks, Rizoma Swing Arm Spools, Pro-Bolt tasty Nuts, Gilles rearsets, Sargeant seat, Geelong small tank protector, Geelong Hugger, Bike master magnetic oil drain plug, vortex gas cap, cox radiator guard, Xenon HI's and Low's.