Incredible information here, awesome discussion. Just thought I would add my 2 cents. I have never added WW, but used both "green" and MB antifreeze, the temp on the guage was the same both cases. I have replaced the radiator (nothing to do with the antifreeze), the water pump and thermostat. My car has always run around 80-85 C, the only time it ever rises from there is in heavy traffic, with or with out the A/C on. Just my experience and minimal know how, compared to the rest. Thanks!
Just sold em all !! Curently driving a, 06.5 VW GTI
Euro Lights w/wipers, Clear corners, 17" Monoblocks, K&N Airfilter, Sportline Suspension, Custom SS single muffler exhaust
96' Harley Davidson, XLH 1200