woult it cause any probilims useing dexcool in my 4.9 swap?thanx-B-

No it wouldn't cause any problems as long as you don't mix dex-cool with conventional antifreeze. Most newer vehicles are switching to Dex-cool because of its superior resistance to corrosion and longer life. It is especially recommended for use with todays aluminum engines.

Dex-Cool is bad, Mmmkay. Stick with the green stuff, Mmmkay. (Southpark).

what do you mean that dex-cool is bad? are we speaking of damage here?If you are messing around with me I'll kick you square in the N****! Cartman is cool.-B-

I have herd the debate over DexCool, but the bottom line is that it is better then the green stuff and that is why GM is using it. But you DONT want to mix it with your green stuff. You are better off to just not use the DexCool. You just cant get all of the old coolant out and the leftover coolant will mess up the DexCool.

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Rickady88GT QuadCam 3.5 V6

dex cool IMO is crap, I am a gm mechanic and work with the stuff all day. It does evaporate,sludge, plug up heater cores, powder up and leak through gaskets more so than the green. I would remove dex from my own car and put in the old green.

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Except you cant. Uless you install a new collant system. I am talking everything needs to be repaced including all rubber hoses ans steel lines. The two coolants dont mix. The reason they switched is the red is more enviromntally friendly.

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85 GT 4 speed 2.8L auto X'er

I visit the GM truck forums alot. They call it "death cool" over there. The general train of thought is that it's ok, but you should drain and fill every 1-2 years or drain and flush every 2-3 years. The problems occur when the fluid gets about 3 years old. It apparently gets acetic and eats gaskets. It also likes to sludge up if you have trapped air in the closed system. The Prestone version of dexcool is suppose to be better. You don't have to change anything to convert you car, just flush really well.

I am going to drain and fill my 2003 Silverado every years for 3 years until the warrantee is up, then it will be the green stuff for me.