tap or distilled water for mixing dex-cool?

simple · February 25, 2005

I've heard people say that only distilled water should be used, but some of the dealers I've talked to say they use tap. What's up?

carguru · February 25, 2005

Contamination and Dex leads to problems. I use distilled only.

lrymal · February 25, 2005

Contamination and Dex leads to problems. I use distilled only.

<{POST_SNAPBACK}>

Distilled only here as well. Better yet, get Dexcool's pre-mix. Already diluted with distilled water, ready to go.

MCourson · February 25, 2005

Dealers use tap because they are morons and then truly do not care about our vehicles. Then the dealers don't have to take the blame because the people come up with conspiracies ("Deathcool") and class action lawsuits.

Distilled only.

simple · February 25, 2005

So, for someone who used tap like I did, will I still be ok?

Mighty HD · February 25, 2005

I change the deathcool every year in the vecicles. I buy the pre-mix. Can't go wrong.

RyanZ71 · February 25, 2005

Fortunitly for me I work in the water industry and get ultra pure deionized water for free

dewfpo · February 25, 2005

Distilled water ONLY. $0.57 at Wally Mart.

DEWFPO

Mattt · February 25, 2005

What are the implications of getting rid of the Dex Cool? I had problems with my 97 5.7 and intake manifold gaskets going away. I was told its from that crap Dex cool, too corrosive according to a Chevy Tech.

Can I get rid of the Dex Cool in my 01 and replace it with std. green coolant, or something else? What is the best replacement? Id rather not keep that red crap in there if its going to eat gaskets and such.

Whats the recommendation here?

TIA

Elwood 2000 · February 25, 2005

I have the factory Dexcool in my truck since new and not problems. (86k miles). It is time to change it, but I will go back with dexcool.

budhayes3 · February 25, 2005

I used the pre-mixed stuff when I did my cam swap, don't want to take any chances. I've heard stories of the older Dex-cool turning to mud in the 4.3's, although I haven't really heard of too many issues with the GENIII engines. Still, I feel that it's cheap insurance.

carguru · February 25, 2005

I've changed everything over to Dex so I can stock only 1 coolant in the garage. Haven't had a single prob to date. Of course I do change the coolant in the non Dex vehicles every couple of years.