Any diesel guys on here? if so i have a question. My pappys truck is a 99 7.3 powerstroke. We put a gallon of anti-freeze in it a few weeks ago, checked it today...empty. it leaks very little around the oil filter, but definatly not enough to drain it in a few weeks. No leaks any where else. no coolant in the oil and no white smoke out of the exhaust, no idea where its going.
Does this sound like a head gasket issue to anyone?
Check the oil cooler tube assy, the O rings fail and leak when under pressure when warm.