anyone tried Motul MoCool
 

Motul makes some killer synthetics/oils/ greases.. Say this MoCool can reduce water temp by UPTO 30 degrees...just curious..

water wetter

Some coolant may not be suitable...if not going racing,stock Nissan Longlife coolant should be good enough.

I use Red Line water wetter. It does work. You will see a noticeable difference in cooling temps. Motul makes good stuff too, I just haven't used it. Here Red Line products are easier to find.

The more water you run, the more effect it will have. Their "30 degrees" claim would be with almost straight water. If you're running a 50/50 mix of water and coolant, expect more of a 10 degree drop.