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Silverado & Fullsize Pick-ups The Silverado has been one of the best selling trucks in the US for decades, and is truly proven to be "like a rock".

2014 Chevy Silverado
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  #1  
Old 07-11-2011, 10:32 PM
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1998 Chevrolet C/K 2500
 
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Default coolant what type

Doing my yearly prevented maintance on my rig... this year it's belts, all hoses, plugs,wires,cap,rotor. so my question is a simple one I hope, my ride is a 98 2500, 5.7 vortec, silverado ext cab... the coolant is the Orangish color. So do I go back wtih orange, or can it be mixed with another, if so which color? I have seen containers in stores that state mixes with all types..but I dont beleive everything I read. but if I need to reflush and refill then ok, currently the coolant is clean, and tests fine... any advice???
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Old 07-12-2011, 09:45 AM
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i wouldn't mix...bein orange its probably dex-cool and if you mix with dex-cool the fluid will get all gummed up inside the hoses and you definitely don't want that. but if you're doin a flush and fill then you should be able to use any coolant.

but im pretty sure that the green coolant is usually used for cars and the orange is for trucks because of its coolin properties
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Old 07-12-2011, 12:38 PM
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So i can only get the Dex-cool Orange from GM??
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Old 07-12-2011, 01:12 PM
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you don't have to if you're doin a flush...if you do a flush then use whatever you want. i just know that the orange is for trucks and green is for smaller vehicles. you don't have to use orange BUT i would stick with it
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Old 07-12-2011, 09:30 PM
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Ok, thanks.. I really want to put back what came out,,, Orange... Is that a dealer only item or can I get the orange from an auto parts place.....
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Old 07-12-2011, 10:05 PM
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Wally World (walmart)sells Dex-cool
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Old 07-13-2011, 06:18 AM
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Tks....
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Old 07-15-2011, 11:14 AM
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Quote:
Originally Posted by usmarine0905 View Post
Ok, thanks.. I really want to put back what came out,,, Orange... Is that a dealer only item or can I get the orange from an auto parts place.....
You can buy Dex Cool or Prestone (both orange) at your local Autozone. They sell it in 50/50 or 100%. You'll have to mix the 100%. I use Prestone in my 97 5.7 1500. Never had an issue so far. (original owner)

I believe you can mix the Dexcool and Prestone as long as they are both orange and the correct mixture.
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Old 07-15-2011, 12:53 PM
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I wouldn't change the coolant just to be changing it. If it tests good then it is good.

The color is just a dye, so be careful when buying. All antifreeze/coolants are glycol based either Ethylene or Propylene the major differences are in the corrosion inhibitors.

To dispel rumors:

Quote:
According to the DEX-COOL manufacturer, "mixing a 'green' [non-OAT] coolant with DEX-COOL reduces the batch's change interval to 2 years or 30,000 miles, but will otherwise cause no damage to the engine."[20] DEX-COOL antifreeze uses one of two inhibitors: sebacate and 2-EHA (2-ethylhexanoic acid), which works well with the hard water found in the US, but is a plasticizer which can cause gaskets to leak.[14]
Read the Wiki for more info. Take note of the GM DEXCOOL lawsuits.
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Old 07-15-2011, 10:27 PM
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thank you everyone... I am going to catch, strain, and reuse my antifreeze,Dexcool.. when I change out my hoses this weekend and just top off with the same product...Never had an issue with my truck...255K.... runs strong..perfect runner. Just replaced the starter last weekend, it was the original....
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Old 07-15-2011, 10:27 PM
 
 
 
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1998, 57, 91, 98, antifreeze, chevy, color, coolant, kind, requirement, silverado, truck, type, vortec, vortex


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