2001-2006 Honda TRX 300EX Sportrax 300EX Factory Service Manual, Page 54Get this manual

2001-2006 Honda TRX 300EX Sportrax 300EX Factory Service Manual, Page 54

MAINTENANCE Remove Ihe oil fi ller cap,ld ipsl lck and check the oil levelIf the level is below the lower mark on the dipstick, fililhe crankcase with recommended oil
UPPER LEVEL LINELOWER LEVEL LINE

RECOMMENDED ENGINE Oil:

Pro-Honda GN4 "Itroke Oil or equivalent motor oil API rvice clauification SF or 5G Vi,co,lty: SAE 10W-40
Other viscosities shown In th chart may be used when the IIverege temperature in your riding ar8a Is within the Indicated rangeCheck that the D-ring is in good conditionand replace il if necessaryReinstall the oil filler capdipst ick