Georgev, From the manual SAE 80 or 90. 6.8 quarts. Make sure you recheck level after runing in 4 wd. I poured from a 5
gallon pail, cheched level and found it OK. Rechecked in a few days and it didn't even show on the dip stick. If I had to do it again I would just buy quarts instead of the pail, easier to get to the fill point and keep track of the quantity. gacken