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post #1 of 46 Old 01-21-2008, 07:08 PM Thread Starter
Deere9670
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coolant type

I bought a 2002 tj with the 4.0 about 1 year ago. Yesterday I cheaked the fluids and the coolent was a little low. The coolent in the reserve is orange and i am assumeing that it is dex-cool. I heard that durex is the right coolent to use. Whats everone else using? Should i drain the dex-cool?

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post #2 of 46 Old 01-21-2008, 08:27 PM
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No its not dex-cool. Dex-cool is for GM products. I bought some to have on hand just incase and i bought a premix by Prestone certified to use in mopar products and can be added to any color coolant.

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post #3 of 46 Old 01-21-2008, 08:47 PM
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Quote:
Originally Posted by scotiez
No its not dex-cool. Dex-cool is for GM products. I bought some to have on hand just incase and i bought a premix by Prestone certified to use in mopar products and can be added to any color coolant.
dex-cool is good for coolant systems made of aluminum, not just GM

but lets not turn this thread into a huge debate as the other 30 thread on JU on cooalnt had turned into
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post #4 of 46 Old 01-21-2008, 09:02 PM
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most auto parts places (auto zone, pep boys, etc) and walmarts, carry new antifreezes (store brands and name brands) that can be used with any color, says so right on the label. pure or pre-mixed, 50/50. just get a gallon to use for top-off.

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post #5 of 46 Old 01-21-2008, 09:11 PM
itguy
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Quote:
Originally Posted by Deere9670
I bought a 2002 tj with the 4.0 about 1 year ago. Yesterday I cheaked the fluids and the coolent was a little low. The coolent in the reserve is orange and i am assumeing that it is dex-cool. I heard that durex is the right coolent to use. Whats everone else using? Should i drain the dex-cool?
for newer jeeps, use only Zerex G05 a HOAT coolant! AND NEVER ADD Dexcool to your jeep!

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post #6 of 46 Old 01-21-2008, 09:16 PM
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Oh please this is all bs. I've been using 50/50 premix dexcool in my wrangler since I first got it 4 years ago. It works great. Temperature is always on point and has never even come close to overheating. It seems to last longer too. Can any of you explain why dexcool is so bad for it?

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post #7 of 46 Old 01-21-2008, 09:20 PM
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Quote:
Originally Posted by valacech
Oh please this is all bs. I've been using 50/50 premix dexcool in my wrangler since I first got it 4 years ago. It works great. Temperature is always on point and has never even come close to overheating. It seems to last longer too. Can any of you explain why dexcool is so bad for it?
simple google "dexcool". btw if you don't completely flush out your old coolant (green or hoat) it will mix and start eating away your aluminum internals. sorry, but I have seen this first hand.

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post #8 of 46 Old 01-21-2008, 09:24 PM
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Quote:
Originally Posted by valacech
Oh please this is all bs. I've been using 50/50 premix dexcool in my wrangler since I first got it 4 years ago. It works great. Temperature is always on point and has never even come close to overheating. It seems to last longer too. Can any of you explain why dexcool is so bad for it?
btw, why even risk it? use what the manual says HOAT.

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post #9 of 46 Old 01-22-2008, 02:56 AM
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I am using Valvoline Zerex G05 and its compatible with MOPAR requirements. It wasn't necessarily any more expensive than other stuff, so why risk it.
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post #10 of 46 Old 01-22-2008, 02:58 AM
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Quote:
Originally Posted by itguy
btw, why even risk it? use what the manual says HOAT.
I had gone to Advanced Auto here to get a gallon of coolant that says HOAT, just like my manual says. I could not find any that says HOAT and the Person working there didn't even know what it was. How ever i settled for a 50/50 premix made by Prestone that said it could be mixed with any color, any brand, and is certified to be used in Mopar systems. I figured this is the best bet for if i have to add just a little. If i want to flush the whole system and preplace new i think i'll go to the dealership and buy some HOAT from them. I am sure they have it. I'll probably have to pay more though being its from a dealership.

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post #11 of 46 Old 01-22-2008, 03:02 AM
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Valvoline Zerex G-05 is HOAT. Have a read of this:

http://www.valvoline.com/pages/produ...asp?product=10
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post #12 of 46 Old 01-22-2008, 03:05 AM
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Quote:
Originally Posted by scotiez
I had gone to Advanced Auto here to get a gallon of coolant that says HOAT, just like my manual says. I could not find any that says HOAT and the Person working there didn't even know what it was. How ever i settled for a 50/50 premix made by Prestone that said it could be mixed with any color, any brand, and is certified to be used in Mopar systems. I figured this is the best bet for if i have to add just a little. If i want to flush the whole system and preplace new i think i'll go to the dealership and buy some HOAT from them. I am sure they have it. I'll probably have to pay more though being its from a dealership.
Valvoline Zerex G-05 is HOAT. Have a read of this:

http://www.valvoline.com/pages/produ...asp?product=10
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post #13 of 46 Old 01-22-2008, 08:22 AM Thread Starter
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I bought the jeep used from a dealership and it came with an orange coolent in it(I am assuming it is dex-cool). I have a gallon of Zerex G-05 in my garage. Should I flush my whole system and fill with Zerex G-05 or just leave the Dex-cool?
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post #14 of 46 Old 01-22-2008, 08:31 AM
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Quote:
Originally Posted by valacech
Oh please this is all bs. I've been using 50/50 premix dexcool in my wrangler since I first got it 4 years ago. It works great. Temperature is always on point and has never even come close to overheating. It seems to last longer too. Can any of you explain why dexcool is so bad for it?
Are you using "Dex-Cool" or "Dex-Cool Approved?" There is a big difference!
I'm not going to make this a discussion on what coolant to use but many people confuse "Dex-Cool" & "Dex-Cool Approved." They are not the same fluids. Also, my understaning is Dex-Cool coolant is only available at a GM dealership. "Dex-Cool Approved" coolant can be added to any vehicle requiring "Dex-Cool" and is widely available at just about every parts store. Prestone now claims it makes a coolant that is approved for all vehicles for all coolant types.

I flushed my system and refilled with Prestone regular ol' green stuff, distilled water and Redline Water Wetter. The hot-pink colored Water Wetter changed the green coolant to green-orange. Maybe that is what the previous owner did.

If I was the original poster (OP), I'd change the coolant since it is ~5 years old. Fresh coolant has anti-corrosive chemicals that help promote long life to the radiator, heater core and water pump. When it comes to topping it off in the future, the OP can use the exact same fluid.

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Last edited by Slithering_Joe; 01-22-2008 at 08:49 AM.
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post #15 of 46 Old 01-22-2008, 08:51 AM
itguy
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Quote:
Originally Posted by Slithering_Joe
Are you using "Dex-Cool" or "Dex-Cool Approved?" There is a big difference!
I'm not going to make this a discussion on what coolant to use but many people confuse "Dex-Cool" & "Dex-Cool Approved." They are not the same fluids. Also, my understaning is Dex-Cool coolant is only available at a GM dealership. "Dex-Cool Approved" coolant can be added to any vehicle requiring "Dex-Cool" and is widely available at just about every parts store. Prestone now claims it makes a coolant that is approved for all vehicles for all coolant types.

I flushed my system and refilled with Prestone regular ol' green stuff, distilled water and Redline Water Wetter. The hot-pink colored Water Wetter changed the green coolant to green-orange. Maybe that is what the previous owner did.

If I was the original poster (OP), I'd change the coolant since it is ~5 years old. Fresh coolant has anti-corrosive chemicals that help promote long life to the radiator, heater core and water pump. When it comes to topping it off in the future, the OP can use the exact same fluid.
the oem fluid that came in my jeep was red/orange in color, I can see how this would confuse people into thinking its dexcool. locally here in denver, I found PEP-Boys and Napa carry G05.

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