Im been using dex cool in both my cars for quite a while now without any issues. My buddy has used it even longer then me in his Evo.

 

Ive been using only oem mitsu green in my evo and never had any coolant related issues. during my build I took off the water pump with 64k miles and it sill looked great. Ive seen water pumps with less miles look worse, fwiw.


Ya there is a part of me that likes the cool blue color of bmws coolant, but if mitsus coolant has been working for me, no need to fix what aint broke.