dex-cool rusty colored sludge
Instructor
Joined: Aug 2004
Posts: 108
Likes: 0
I would always use dex-cool, it was designed to be less harmful on aluminum engine parts(cooling sys, heads, block), which we see more of these days, not just Vettes. You can buy dex-cool at your local Wal-Mart for about $6 gal. There is also a Prestone 5 year red/orange type for about the same price. Believe it or not, Prestone makes an anti-freeze that can be added to EITHER type!!! 
I'd like to know what scientist figured that out, and his explanation of how that works!! 
I also saw a Zerex 5 year type somewhere that was GREEN (???). I bought that and used it in an old classic of mine, so the overflow bottle looks green.
I'd like to know what scientist figured that out, and his explanation of how that works!! I also saw a Zerex 5 year type somewhere that was GREEN (???). I bought that and used it in an old classic of mine, so the overflow bottle looks green.
