If head gasket what would have caused it? i baby this tractor, & i think thats why im pissed offTwo things I would check. One, check the oil level. If it is over full, it may be being pumped out through the pulse line. Second, start the engine and run at 3/4 throttle. Carefully remove the dipstick and rest it on the fill tube. If it bounces all over the place, you may have a blown head gasket, creating too much pressure in the crankcase.
Can't tell you that unless you tell us the make and model numbers of your engine. Their not all the same.