Ok, I'll bite.
I had a .040 428 in my T-bird for a long time. I couldn't get that thing to cool no matter pulley ratios, timing, a/f mixtures, aluminum radiators, fans, nothing. It'd get hot, stall, boil over, stink hot, ping like crazy, and run ever hotter when driven or idling.
In desperation I used the Evans system, the water pump, waterless coolant, and a 7 pound radiator cap.
What I found was that the Evans stuff does NOT make it run cooler. Can't say it made it run hotter either. BUT the engine didn't seem to care. Got rid of the stinky-pingy-stally-boily characteristics that made the car NOT fun to drive. So I drove it...although I didn't like what the temp gauge said. I never hurt the engine, but I did eventually pull it out for a milder one.
