Dummie Question. Best Coolant??

[2004GrandPrixGT1]

Guys, what is the best type of coolant for our 38s? I currently just have the normal orange dexcool. What's the best cooling coolant, lasts longest or just is better? Also how do I do a coolant flush? I am thinking its probably not as easy as simply disconnecting the lower hose so if you guys can help please do. Thank you in advance.

[matt5112]

MOTOR Magazine Article | MOTOR Information Systems

you decide.

[2004GrandPrixGT1]

Thanks, how do I do a coolant flush?

[Fivefingerdeathpunch]

I could do it for you. lol.

Or there might be a thread that someone has made, but I am sure a simple search of the topic and many pointers will be brought up in multiple threads.

[09mccoyb]

I was just about to make a thread asking these same questions. I know how to do the flush, (or have a pretty good idea), however; I'm curious as to what you people suggest as far as coolant (Preston, Autozone, ect.)

[Kolton Lock]

You drain it and run a hose with water through it. That's how you flush the radiator at least.

And I pretty much think any like green mix with any color coolant works just dandy.

[FordMan77]

As long as you flush all the Dex out of the system you can refill with anything you want. I personally went with plain old green coolant and have not had any issues coolant related. Just don't mix anything with the Dex and you're good. And I wouldn't recommend running the pink coolant for Honda's. If you go conventional I would stay with yellow extended life or green.

[matt5112]

which yellow extended life?

Prestone or G-05?

[FordMan77]

I'd go with Prestone personally, but that's just what I've used over the years.

The G-05 may give a longer life between coolant changes being a hybrid coolant. I know some of the newer high end cars have it, as well as Ford and Chrysler. It's also priced about the same per gallon.

[CrazyGuy03]

Whatever's green

[matt5112]

Prestone is Dexcool without orange dye. Doesnt provide corrosion protection for quite some time and eats nylon gaskets.

Hence Ford and Chrysler not using it and using G-05 instead.

Whatever's green

They're all based on ethylene gylcol, which is clear.

So its just a matter of what dye they put in it.

Prestone dyed dexcool green and called it all makes all models.