After my recent successful timing belt/WP change, I was more than happy to help a buddy with his this weekend. When we put everthing back together, we had picked up some Advance Auto Universal Coolant. It says that it will mix with any brand/type of coolant. My suggestion was, if he wanted to use it, do a complete flush and then use the AA coolant. I am assuming that the AA coolant is somewhat like a Dex-cool. Well, he mixed it anyway. Any thoughts?

Also, here is a .pdf file on Advance Auto's website about the coolant.

http://www.advanceautoparts.com/engl...20brochure.pdf

It says in several places that it can mix with anything. Oh well, at least it's not my water pump we'll be changing in a year.

 

Personnaly, I won't even mix brands of motor oil. Everyone uses different additives, and who knows how they could react together. So the same would apply to coolant for me.

 

I don't think he is going to hurt anything. After a H2O pump change he should only have about 15-20% red left in the system. From what I was told the Advance anti-freeze is made by prestone. I can not confirm nor deny this.

I used this anti freeze in my civic (wich was changed to dex-cool) and topped off with adv anti-freeze and saw no ill effects. except dex-cool sucks. it is crystalizing in my cooling system(but that is another story).

I think he'll be fine.

 

DO NOT MIX ANYTHING WITH DEXCOOL OTHER THAN DISTILLED WATER.

The entire cooling system in my Impala is %$%$%(* due to dexcool.