Can't seem to purge air pocket
I pulled the lower radiator hose the other day when changing the p/s pump.
I filled the degas bottle with g05/distilled water to the fill mark.
When running after a good drive, the tank is near empty. When the truck is cut off and cool, the bottle returns to the fill mark.
I also noticed that the coolant temp is about 15-20 degrees cooler than the oil temp. Usually it is no more than a 10 degree difference.(I put in a new oil cooler and coolant filter about 6 months ago)
How do I purge the air pocket? I have tried idling the motor with the degas cap off, but nothing seems to change.