[pelsteve1]

I thought i read that due to the front radiator location, the front needed to be higher. But in any case, I actually started out level and only raised the front afterwards by the 3 inches to try to source more coolant, but not much more came out. In any case, I have trouble believing 3 inch delta from the jack mounts with open tubing would be the cause. Just don't understand why there is such a discrepancy.

I'm a bit suspicious about the heater setting aspect discussed above, as it didn't seem to do anything, and wondering what the expected response is here and how to verify such correctly.

And just to confirm, this is 01 Boxster S, 6 spd manual