Quote Originally Posted by Lukezen27 View Post
My car overheats on Honda OEM coolant as its too thick for an aluminium radiator!!!

Changed to Castrol post mix and mix 30% coolant 70% Water

Problem solved



This is also what my Tuner told me to do for even better cooling

Weird thing is it wasn't overheating before. I flushed my radiator and using Nulon concentrate to 30% diluted and it started overheating.

You reckon using a different coolant or diluting it more to like 20-25% would make it less likely to overheat.

Thing is it was not overheating before??

Hmm this might be something to do before buying a new rad