2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 65Get this manual
MAINTENANCE
Remove the oil filter capdipstick and check the oil levelThe engine contains sufficient amount of oil if the oil level is between the upper and lower level marks on the dipstickIf the oil level is near or below the lower level mark, add the recommended engine oil to the upper level
markRECOMMENDED ENGINE OIL: and eM types: Pro Honda GN4 4-stroke oil (U .S.Aand Canada)
or equivalent motor oil API service classification: SG or higher
JASQ 903 standard: MA
Viscos ity: SAE 10W30