[jeh1995]

Update - still not fixed...

I ran a hydrocarbon test a couple of time with negative results, no color change. The head isn't leaking. I checked the blue fluid using CO2 from my breath... the system worked as advertised. Again- no head leak.

To make sure I didn't have any air in the cooling system I tried one of the vacuum based lead checkers/fillers. Pretty cool way to do business. The cooling system is full without any leaks and without any air in it.

Car still running at the 100C mark. On the highway it is steady there. Turning on the defroster make a lot of heat, but, doesn't lower the water temp at all.

I'm using a Wahler 80C thermostat and 85C fan switch. Fans are working properly, 2 speeds, on when they should be according to the gauge. I calibrated the gauge from the sender to the dask gauge using precision resistors... it is right.

Sometime next week I'll receive a 72C thermostat and 75C fan switch... we'll see. Thanks for all the help so far...