Originally Posted by jacksun
I night be stupid. I checked it about 90 miles from home and it looked low but I got home and turned truck off and immediatly checked. It was where I had marked this morning. But then rewind. When I intentionally drove down and arrived after like 650miles I noticed the next day I was low about 3/4 to an 1" low. Topped it off, drove probably 60 miles in town. Truck sat a day and drove home. And it hasn't moved. Is the 6.0geist playing w me or what.
It will drop when it gets up to temp from pressure, it will rise, if your cap/degass bottle leaks, egr leaks, head gasket leaks, hoses leak, air is working out of the system, or you intentionally loosen the cap. Have you recently drained the system?
Sent from my phone that somebody didn't help me get.