Does anybody here use it and does it really make your engine run cooler?

 

Yes, ... and yes.

I use it in my KTM 525 MXC, which is an even more radically tuned engine in stock form than a YFZ 450 is. If I were going slow, climbing rocky mountainsides in the pinion pines, I could get my KTM to start to loose coolant out the radiator cap vent. Or if I were going slow climbing big sand dunes in 102 degree heat the same thing would happen, because without enough airflow over the radiator it would overheat. I changed to the Engine Ice coolant, and made no other changes, and so far I haven't lost any more coolant. It seems to make a difference.

DV

 

It works great. I have seen a 20* drop on a guage on a streetbike just by swapping coolants.

 

Thanks, i guess i will be using it than since lots of the trails i ride on are slow.

 

Any brands that seem to work better than others? TIA

 

Redline works the best. I tried them all. The purple stuff works better than the regular rad fluid.