95 6.5 td haven't run it in about 3 weeks I bought it 8 weeks ago with a bad head gasket we replaced it and checked the heads and everything out they're fine. Went to start it last night checked the dip stick and it looked normal it wasn't milky or anything but it was way above the max line. Last time I put oil in it was the right amount this also happens on my 01 Silverado just don't know what it could be