Coolant

Motul Optimal Inugel Ultra is the coolant that track-club use in all of our track and race cars, for optimum performance we often dilute it on a 50/50 concentrate  but 30% is often more than sufficient.  Non concentrate version are also available and where required and particularly in race cars we often use MoCool to help engines run that bit cooler.  The claimed 15 degrees on the packaging is generally a bit optimistic although not unknown but we generally find a 5 - 7 degree cooling effect which can be a significant help especially in turbocharged cars.