Hi, i did get the air out of the oil thanks for the help. Now I'm looking at the cooling system, i do not have manuals on this engine i found the ones for the 642 with the ford engines. This bobcat does not have a thermostat in the system, I believe in can go anywhere from 180-190 deg thermostat but was wandering if anyone knows if it is a offset or centered thermostat. i believe the thermostat is in the upper Radiator hose where it connects to the engine. On this motor i think the temp sensor is below the thermostat housing which sets on the right side of the motor. I think while i have it drained going to put a temp gauge sensor in so the oil pressure and engine temp will not be on the same warning light. If anyone has a manual for a Mitsubishi engine would by helpful.