I just got me a 40k tru cool tranny cooler for free from a friend… he had it sitting outside in his backyard for a few months.. what’s a good way to clean it up good before installing it???? I would also lyk to paint it black so it doesn’t pop out as much behind my grille any suggestions?? Thanks

 

Soak it in a tub of cleaner like simple green. Then blast it out with an air hose.