I am about to reinstall the O2 housing and Nappa said they recommend the Dexco Red coolant type. Can it be mixed with the OEM green or should I flush it with water then with the red coolant?

 

You do not have a GM product. Leave the red stuff on the shelf and buy the green.

 

you mean dexcool the orange stuff? thats for GM cars

 

+1. A lot of people say that you should switch, but there really is no point. Keep good maintenance on the green and you'll never have a problem. Plus, it's cheaper.

 

That's what I thought too but I guess the guy at Nappa probably don't know what he's doing. He recommended that to me so I'm like... Ok Anyway, thanks for your responds!

 

If you are going to switch, switch to ASMoil coolant... its a universal coolant and it is non toxic.... or course the test data shows it is awesome but haven't had it in my car yet, everything else I have tried oil, brake fluid, manual gear oil, all has worked great, so I figure the coolant should follow suit. Its on the shelf for my next coolant flush!

Just my opinion....

 

Green + orange = gunk. You should not switch, even in a pre Dexcool GM car.

 

if you mix coolant yourself use distilled water. it doesnt have the minerals that form deposits through out the system.

 

Oh **** I used tap 3/4 tap waters

 

It doesn't matter. I have mixed the bejesus out of 15 different kinds of coolants on DSM's and Evo's, never had a problem besides weird black looking coolant . My engines never showed any evidence of sludge buildup, abnormal galling, or leaking because of the mismatching. Just make sure you use distilled water only with your coolant.

 

Do not mix the different coolants. As stated above, this will cause gunk.

Many types of coolants are formulated for specific engines. GM uses Dexcool (orange) because many of their engines have aluminum blocks. Since the 4G63 has an iron block, I see no problem using typical green coolant.

 

Mixing it will cause your coolant to gel up and block coolant passages causing pressure build up and you'll end up blowing gaskets, popping holes in your rad, blowing off hoses, etc.

If you're going to use the red you must flush your rad and motor of the green and you'll be good to go. I did this in my dd Jeep Cherokee a year and a half ago when I replaced the t-stat. The coolant is just as red now as it was when I first put it in.