Quote Originally Posted by Nate88 View Post
Can I ask why? When I installed the air bleeder I was at a tech day with 4 other cars. All of them, besides mine until I installed it, had the bleeder from the thermostat housing to the coolant bottle. None of them had the valve, so theirs would of been open all the time. Just trying to understand it all. Thanks.
So these other cars had just the hose routed straight from that bleeding screw back to the overflow bottle, but nothing to turn the flow on and off? Hmmm, never seen that before. I recall the install of this auto-bleeder on my own car taking that bleeder screw out and attaching the hose with the valve in between back to the overflow tank via a tee that was installed in the existing small hose. That bleeder screw didn't go anywhere before, i.e. if it was opened, it would just dribble/spray out and on the ground. Advice I got was to leave it closed under normal conditions and only open it to expel air trapped in the system. Why? Don't know. And don't think I got an explanation or didn't ask for one. Seemed kosher to me so I went with it. I don't know why your car is getting up to 220 deg F as you're seeing. That open valve was the only thing in your description that jumped out at me.