Alan and Michael, I found your posts fascinating on the valve function, which I fretted over at one time, knowing the engineers did not have it as an afterthought. In other words, I had DEEP concern of unwanted heat at improper times prior to removing...BUT it never materialized when the rod position was @
100% shut.. There were grave doubts of discovering that the Ac console vents were compromised. What a great relief when it did not happen as expected, or others found first hand.
Much has been written about it's function in the loop, which makes sense, but the car presents no heat in July of 98F, shutdown, or startup. Although in the summer, I often 'think' about the core temp...whether it will present a problem, since logic says it should be. Otoh, because there is no intrusion, I often feel relaxed, content, with this part of the car, where nothing has reared it's head from the day it was done. Like a blessing of some kind..