I had a question on if my coolant reservoir tank should have any pressure in it when the engine is up to temperature?
I went to check the level ( after seeing posts about the possibility of leaking hoses
), and noticed that the coolant was at the MIN line of the tank. I figured that I'd top it off with a little 50/50, and upon opening the tank, I got a pretty good rush of pressure, and the tank actually shrank back down to where the coolant line was back to where it should be.
Is this normal?