Anyone ever use Hy-Per lube Super Coolant as an additive to their radiator, or Purple Ice, Water Wetter or whatever? I run the old "green" coolant with a 50/50 mix with water and am wondering if there is a benefit to these poducts. The Hy-Per Lube is currently buy1 get 1 free at O'Reillys, so if it's worth it and will not cause damage of any kind I'll give it a shot. I do not have an aluminum radiator just FYI.

 

There was some testing done and the Water Wetter was proven to be the most effective. I use it in my car and it dropped my temps around 10 degrees on a 100+ degree day here in traffic. I've never used the Hyperlube brand.