I am mid rebuild on a 08 STi. New block will have Benson sleeves, Cosworth internals, full slate of cooling mods (Koyo, Crawford hp water pump, AC delete, Spal fans, E85, scoop block off (as its a FMIC), Swaintech coating on most parts, Mocal oil cooler, etc.) and all the other usual mods.
The car is in Colorado. Its a daily driver and 8-10 track day car in the summer (HPDE3/4 maybe TT this year).
I am considering trying your coolant.
As we do freeze here, I assume Ill need Street in the winter.
Will this protect internals as well as OEM coolant (Im not worried about a Subaru warranty anymore of course)?
Are there any issues switching to your Race version in the summer?
Do you ever recommend adding a water wetter to the mix?
Do your recommend increasing the % water in the summer?
Thanks for your help!