Took the tractor out and warmed it up driving it about a mile. Backed it into the garage and sat idling for about 1/2 minute and shut it off. Looked under back and had a puddle 3" wide and 6" long. Maybe an ounce of oil. Had this happen before. Appears to be coming out the pressure relief or vent hole. Red button up high and under the top attachment piece. It dripped backing up the drive and into the garage. Checked oil and is half down on dipstick when warm. Same place has been since first time I ever checked. Got tractor last October new and has about 15 hours or so. Not a major problem I guess, but has anyone else had this puking problem? Thanks Harry