I FIXING TO CHANGE MY TRANSMISSION-HYDRAULIC OIL SOON. BOUGHT SOME TRAVELEER TRACTOR FLUID AT TRACTOR SUPPLY TODAY. FOR MY 1310 TRACTOR MY MANUAL HAD THE DIPSTICK-FILLER PLUG ON TOP IN FRONT OF SEAT AND DRAIN PLUGS IN 4 DIFFERENT LOCATIONS. FOR TRANS. IT WAS BOLT ON BOTTOM SIDE. MINE IS FOUR-WHEEL DRIVE AND HAS DRAINPLUG IN FRONT BOTTOM OF WHAT LOOKS LIKE A 3RD MEMBER AND 2 MORE-THE REAR END DRAIN PLUGS AT BOTTOM OF REAR AXLES NEAR CENTER OF TRACTOR CLOSE TO WHERE DRAWBAR ATTACHES. ALL ARE COMMON SUMP AND TRY TO KEEP FLUID CLEAN. FRONT AXEL ON MINE HAS DIPSTICK ON SIDE TOP AND DRAIN ON SIDE BOTTOM OF TRANSSY CASE. ALSO HAS FILL AND DRAIN PLUGS ON INSIDE OF FRONT 4WD WHEELS TO CHANGE IF NEEDED. PROBABLY USE ALL 5 GALLONS FOR ALL THE WAY CHANGE OF FLUID. THANKS GUYS TOO FOR THE INFO