I thought our system ran at 1.5 bar but that the cap relieves pressure, if needed, when it builds above 2 bar...the limit of the cap.
It's a sealed system with a thermal expansion tank to buffer changes in pressure but the pressure increases when the car is running. I didn't take physics, but I'm confused a bit since I thought the system, at rest, would be at one atm. My initial thought in reading your post is that the car would relieve pressure when it's running.
How does a cap reduce the pressure at which the system runs without letting either air or coolant out?
Not arguing...just curious.
I'm so depressed. No one wants to come see me in NYC: Sat, Oct. 8, 6 p.m. at Greenwich Village Comedy Club.
Mangofy your E46!