Coolant

myworld · Post by **myworld** » Fri Nov 04, 2011 1:59 pm

Which coolant should i use for my car 94 sse

willwren · Post by **willwren** » Fri Nov 04, 2011 2:16 pm

The green stuff.

myworld · Post by **myworld** » Fri Nov 04, 2011 2:17 pm

How can i tell the color from the outside of the bottle

willwren · Post by **willwren** » Fri Nov 04, 2011 3:18 pm

Ask someone that works there.

Unless you're stealing it, and asking would be a bad idea. Just steal one of every type and open them when you get home. Use the one that's green.

Post by **J Wikoff** » Fri Nov 04, 2011 3:44 pm

Prestone "Mixes with any" is a popular choice. Though, it's not green.

willwren · Post by **willwren** » Fri Nov 04, 2011 4:19 pm

If you have green in the car right now, it's best to stick with it. If you don't know for sure, the mixes with any should be safe.

01bonneSC · Post by **01bonneSC** » Fri Nov 04, 2011 5:28 pm

Do not get the one that says DEX, thats orange/red. that would be bad.

nos4blood70 · Post by **nos4blood70** » Mon Nov 07, 2011 7:54 pm

http://www.zillamotorsports.com/DEX/
Don't think we can stress that enough!

ronazier · Post by **ronazier** » Sat Nov 19, 2011 3:54 pm

Is there any reccomended methed of flushing DEX out and replacing with the green stuff?
Neutralizer, cleaners etc?

01bonneSC · Post by **01bonneSC** » Sun Nov 20, 2011 1:24 am

ronazier wrote:Is there any reccomended methed of flushing DEX out and replacing with the green stuff?
Neutralizer, cleaners etc?

Just flush the whole system out with water really well and use the Prestone "Mixes with any" coolant.

Post by **Archon** » Sun Nov 20, 2011 1:05 pm

This techinfo article may help you.
http://www.pontiacbonnevilleclub.com/fo ... 45&t=15064

ronazier · Post by **ronazier** » Wed Nov 23, 2011 10:42 pm

Found this on cleaning DEX damaged systems from GM.
http://members.shaw.ca/betterthanyoutoo ... lflush.htm

What size hole do you drill in your thermostats?

Thanks for your help ... and this great site.
Ron

willwren · Post by **willwren** » Wed Nov 23, 2011 10:52 pm

www.dex-cool.net

I took it to a microscopic level to find out what it was actually doing to the gaskets.

ronazier · Post by **ronazier** » Wed Nov 23, 2011 11:26 pm

I saw your article a few days ago (great work). That's what made me aware of the DEX problem and then realized the '02 SSEi I just bought still had the original DEX coolant in it (67K miles). There is a brown tacky film coating the inside of the system. I followed the backflush procedures found on this site and now have water and Peak Super Cleaner and Flush running in it. The cleaner doesn't seem to be doing a whole lot to the brown film. I plan to back flush everything again and put the green Prestone in this weekend.

What size hole to you reccomend drilling in the thermostat? I put two 1/8" holes in a factory 195 for this flush/cleaning and noticed it takes a while to get to 195.

willwren · Post by **willwren** » Fri Nov 25, 2011 11:02 am

You don't need holes for flushing, just get the car up to temp. You want that thermostat to open as early as possible and stay open for the flush to be effective, especially this time of year.

In your climate (fairly cold winters) I'd be considering a 1/16" diameter hole (only one) in both of your cars. 180° would be fine in either, year-round with that size hole.

Your biggest issue at this point is going to be the lower intake manifold gaskets and coolant elbows on BOTH cars. The damage has been done already. Now that you've prevented further damage, you need to repair what's already happened. I'd suggest also doing the valve cover gaskets at the same time for convenience.

2002BonnevilleSE · Post by **2002BonnevilleSE** » Fri Nov 25, 2011 11:15 am

All the advice given above is dead on.
Make sure you clean out the overflow tank good too. I took mine completely out and used a bottle brush to get it all out.
Also make sure to bleed the air out of the system by using the little screw on top of the thermostat housing.You'll need to do it 2-3 times to get it all out.

willwren · Post by **willwren** » Fri Nov 25, 2011 11:21 am

And Techinfo is ALWAYS your friend. There are 3 articles there that directly relate. They will take you through it step by step.

jedwards83 · Post by **jedwards83** » Mon Nov 28, 2011 2:26 pm

None of the long-life Dex-Cool branded anti-freezes (other than perhaps GM Dexcool itself?) use 2-EHA which is the acid that softens plastic. All of the ones I'm familiar with (Prestone, Shell, Chevron, Auto-zone) use Carboxylate for the corrosion inhibitor which is the same organic acid used in the "mixes with any" type anti-freeze. If you're in doubt, go to the manufacturers website and pull up the MSDS.

The only difference is the "mixes-with-any" antifreeze include silicates which is what the OAT technology intended to replace. Silicates are added to resist corrosion, but they get depleted after two years / 30,000 miles or so. It's the primary component in green anti-freeze. Ford and Chrysler use these Hybrid coolants, as do many foreign manufacturers. Orange (Dex-Cool) coolant contains no silicates.

None of the above makes any difference for the intended application, as it's probably best to use regular old green anti-freeze.

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