Coolshirt Maintenance Additive - 16oz Door order an XL

order an XL

Increased reliability - proven in racing and high volume OEM use  High-temperature bearings at both ends of the butterfly spindle Cast stainless steel valve body with stiffening ribs for ultimate durability                           FEATURES: Fits Audi R8 V10 Coupe

the regular fit offers a relaxed

That’s a gain of over 12 HP at the crank- from simply swapping out the fragile restrictive OEM Porsche 997GT3 to the very latest 991

” You don't have to go catless to get pops

Coolshirt Maintenance Additive - 16oz Door order an XLCoolshirt Maintenance Additive is safe to use in all water cooling system and contains a fungicide to prevent the growth of mold and bacteria. Regular use of this non toxic, biodegradable solution not only helps keep your cooling system clean, but helps to improve the life and performance of your system's water pump. Add 2 ounces every time the system is used for best results.