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What should i use?

GTPJOE90

GTPJOE90

New member
my coolant looks gross! dark brown and black crap in it ewwww that the 1 thing i never changed since i got it... well its DUE! this weekend ill flush her. theres a valve on the radiator to drain the coolant and flush it right?? what should i run new in it? i hear dex cool is DEATH COOL lol. what is the best for me?:th_scratchhead: i am not that knowledge able about cooling so if anyone can shoot me some pointers i would appreciate that
 


Tip....Make sure you bleed the air out when your done!!!! Some people forget or didnt know you had to do that!!!
 
I just went to the shop my boss uses and they did a flush, dexcool is suppose to be good for 100,000 miles and my fluid looked like muck. It was too cold out to do it myself and too much snow.
 


Run the yellow. It won't be come corrosive on aluminum (like green does) and won't ever sludge up like Dexcool. It's superior to both.
 
I run the yellow Prestone like Sabrewings.

I had fine flushed and filled @ Jiffy Lube. Know the kids there and I trust them doing something like that...now changing oil...thats a different ball game.
 


In a well formulated US green coolant, phosphate works to provide the benefits you describe. However, if the silicate is not well stabilized and the silicate protection is lost for an aluminum head, a phenomenon know as either "hot surface corrosion" or "aluminum transport deposition", depending on what car company you are talking to, can occur.

In this form of corrosion, the aluminum is corroded from the hot spots in the head, usually near the exhaust ports, and then reacts with the phosphate in solution to form aluminum phosphate. The aluminum phosphate is then deposited on a cool surface in a heat exchanger leading to over heat problems.

It has been reported as either a gelatinous precipitate that blocks the tubes or as a thin ceramic deposit on the radiator (original finding of the problem when Chrysler was testing VW engines to use in Omni/ Horizon in the late 70's) in the shape of the fan. If you write the chemical reactions that occur when the aluminum phosphate is precipitated, you will find that caustic is generated. The corrosion process then increases exponentially.
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More On "Antifreeze: Red or Green?"

That is the very reason Dexcool was created. It can affect anything aluminum in the cooling system (LIM, blower housing, water pump, etc). Now we have the yellow, which is better than both.
 
I never had a problem with Dex. I haven't flushed it all out but after doing my LIM gaskets and now my top swap there's very little Dex left. I do put in the yellow as a replacement though.
 


Yellow is really the way to go.. Dont even have to worry about left overs of Dexcool like you would if changing to green..
 
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