2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 11Get this manual
RECOMMENDED FRONT DIFFERENTIALREAR DRIVE LUBRICANT
The recommended lubricant is Arctic Cat Gear Lube (pin 0436-007) or an equivalent gear lube which is SAE approved 80W-90 hypoidThis lubricant meets all of the lubrication requirements of the Arctic Cat ATV front differentials and rear drives
Since gasoline expands as its temperature rises, the gas tank must be filled to its rated capacity onlyExpansion room must be maintained in the tank particularly if the tank is filled with cold gasoline and then moved to warm area
WARNING
CAUTION
Any lubricant used in place of the recommended lubricant could cause serious front differential! rear drive damageFILLING GAS TANK