I have heard all the fear stories around Dex Cool. Anyway, I have actually been help a friend and neighbor with some of her vehicles. Her husband had actually been taking care of the maintenance yet due to wellness problems, let many things go, reasoning they had actually been done. This included oil and coolant changes on several of their vehicles. The coolant in one looked prefer rusty coffee.

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One is a 2001 Cadillac Deville v the 4.6 Northstar engine. It claims to usage Dex Cool just on the cap. The coolant in the reservoir doesn’t look nasty yet no one has any clue when it to be last done so we think about it time to be done. We have actually a party of flush and some “Universal” lengthy life coolant top top hand. This coolant is the AutoZone brand and also states that it deserve to be blended with any type of color of antifreeze. I have actually used this in vehicles using the eco-friendly coolant however never Dex Cool. Deserve to this auto be flushed and adjusted to this coolant or need to we stick through the standard Dex Cool?

I own a 2006 Chevrolet Uplander which, top top the referral of mine independent garage, had the radiator flushed and also the Dex Cool replaced with global coolant. The was 3 years back in 2010. My son currently owns the Uplander and there has been no problem with the global coolant.

Tester July 15, 2013, 6:24am #3

When possible always get rid of the Dexcool and use among the universal antifreezes.


ok4450 July 15, 2013, 6:31am #4

The Dex Cool would be gone if the car was mine. For what it’s worth, the 96 Camaro the my earliest son owns offers Dex Cool and also that auto went with 3 water pumps (counting the original) in about 4 or 5 year time no to cite the sludging problems.

On the last pump instead of I flushed it out, replaced with green, and also never a problem since.That’s walk on 8 year now…

I would never own a vehicle with Dex-Cool flowing with it’s engine. I constantly flush that out and also replace it v the tried and also true environment-friendly stuff. Never had actually a problem in all the year I have actually done it.

It no matter, but since you currently have the universal, i would use it. Execute NOT use THE flush chemical. Drain both the block and the radiator and then just refill v the brand-new coolant v a mix of 2:1 antifreeze to distilled water. It will certainly be good for an additional 5 year or so.

Another question… i personally own a 2000 Chevy S-10 pickup v the 4.3L. The factory fill was Dex-Cool so I always flushed and refill through it. I am still about 3 years out from my following scheduled readjust and that will be as result of time and also not mileage. Should I walk ahead and readjust now or simply not worry until the moment comes and also then change?

keith July 15, 2013, 7:06am #8

There is nothing wrong v Dexcool.

bing July 15, 2013, 7:11am #9

I know others diagree but I have actually Dex. I was concerned around it yet two dealers and also an independant claimed not come be involved anymore. As long as it does not revolve brown and also there are no wait leaks in the system. I have to admit ns a little much more concerned about doing work on the mechanism myself, but so far no troubles in almost four years. Use the Dex ingredient though no the universal and not the flush and also if its the old it needs to it is in changed.

So the flush is bad, also if the mechanism hasn’t been as well neglected. The Dex-Cool no look brown or broken down however we space trying to slowly do points that room overdue/neglected or the status is unknown. The timing and also mileage of the last readjust is merely unknown in this case.

They had used some cheap crap oil and the engine stuck a ring and began guzzling oil quite badly. Ns have artificial oil in it now and seem to have gained the ring unstuck for this reason the oil usage is only a tiny fraction of before. We plan to do spark plugs together the last adjust of this is unknown and also the oil burn was likely not great for them.

I wouldn’t usage a chemical flush but I certainly would do the washing up it with water till it is clear. Drainpipe then fill making use of distilled water and coolant.

Just curious. What ill impacts have folks seen with chemical flushes?

I haven’t, however if there’s not a problem, I’d fairly skip it. Offered to it is in the just thing within the engine was actors iron and brass, however now there space a most aluminum alloys and plastic that could be much more affected by solid chemicals in a flush.

I would additionally replace the thermostat and radiator cap.I like to eliminate the old thermostat and also re-attach the housing, then perform the water flush v the engine running and the heat on complete hot to flush the heater main point too.Then put in the brand-new thermostat and also gasket.

When every is said and also done…whichever friend use…LABEL IT.Especially if you change to universal, put a label v that information and readjust date for every to watch so as no to mix it wrong at the following top off.

I agree the flushing is good without the chemicals and also the universal range of anti-freeze seems to it is in a high quality product through no difficulties after plenty of years in countless vehicles.

I haven’t used a chemical flush in about 30 year now, but ago when ns did, I remained in the Navy and also had a family members to support, and that meant that I could only afford provided cars, and also older ones at that. Every time ns bought another car, ns would perform a significant maintenance ~ above it, oil, every fluids and also a radiator do the washing up with new coolant. After getting done, within a month or 2 I would begin having difficulties with water pump leaks and hoses failing.

It take it awhile to do the connection, yet my mommy sold me she car and I go the totality routine. In ~ a month I had actually to replace the water pump and every hose in the system. Ns was talking to her on the phone and also mentioned it, she told me that she had just had actually all brand-new hoses put on the just prior to she sold it to me.

I quit using flushes after ~ that and also have had very few problems v cooling systems since then. I have actually used Dexcool in both GM cars and even in our Honda and also my Nissan truck through no problems. Now I use the brand-new universal longlife coolants and haven’t had a trouble with them. I likewise no much longer worry about a tiny old residual coolant in the system, I drainpipe the block and also the radiator, placed the drain plugs back in and refill v a 2:1 proportion of antifreeze and also distilled water. I usage the stronger solution greatly for the additional corrosion inhibitors, ns don’t really need the added freeze protection.

BTW, ns go at the very least 5 years in between changes now, sometimes an ext (5 and a 1/2) and so much have not had actually the coolant show any kind of signs that breakdown. Her vehicle, do what friend think is right, but this has worked for me because that going on 30 years now.

Double examine the owner’s hands-on for the northstar engine. It may call for a cooling device supplement ( i think the is what it to be called). It consisted of some dark brown pellets that you rest up into the radiator.

markmast Correct. On our Olds Northstar v standard antifreeze, it referred to as for pellets to it is in crushed and included witht he liquid change. Castle were about $10 in ~ the dealer and also enough for number of changes. They appeared to be an ext for leaks than anything else. However this is v the standard antifreeze, no Dex so have no idea if the is provided with Dex or no or is compatable v Dex.

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You males are absolutely demonizing Dexcool.

We have hundreds of GM vehicles in our fleet.They all use DexcoolEvery 5 years they acquire serviced, on scheduleThere have actually been no difficulties attributed to the coolant