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Old 08-17-2009
EJ EJ is offline
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Dex Cool Antifreeze in 96 Ranger 4.0L

Hi,
Is it safe to run a longlife antifreeze like Dex-Cool in my 96 Ford Ranger with the 4.0L?

Thanks,
EJ
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Old 08-17-2009
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dont do it. fords are not designed to run dex cool and if you happen to mix dex cool with conventional coolant it will gel and clog up youre whole cooling system. ive got 83,000 miles on my coolant and its still as green as the day it cam out of the bottle, im not sure how you will benefit from using dex cool
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Old 08-17-2009
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I wouldn't do it. My truck is 10 years old has 118K on it and it's still running on the original coolant. I would just run regular coolant, afterall its what the engine was designed to use, so why change now.
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Old 08-17-2009
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now why did my 03 come with the gold ford stuff?
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Old 08-17-2009
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i can't remember if mine was the yellow or the green. with my luck probably yellow.
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Old 08-18-2009
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Originally Posted by Hanks Rangers View Post
now why did my 03 come with the gold ford stuff?
the key word FORD. dexcool is a gm product, not meant for ford engines
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Old 08-19-2009
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This was taken from Wikipedia, the link is for the rest of the article.
Antifreeze - Wikipedia, the free encyclopedia

Organic acid technology

Certain cars are built with Organic Acid Technology (OAT) antifreeze (e.g., DEX-COOL), or with a Hybrid Organic Acid Technology (HOAT) formulation (e.g., Zerex G-05), both of which are claimed to have an extended service life of five years or 240,000 km (150,000 miles).

DEX-COOL specifically has caused controversy. Litigation has linked it with intake manifold gasket failures in GM's 3.1L and 3.4L engines, and with other failures in 3.8L & 4.3L engines. Class action lawsuits were registered in several states, and in Canada, to address some of these claims. The first of these to reach a decision was in Missouri where a settlement was announced early in December, 2007. Late in March 2008, GM agreed to compensate complainants in the remaining 49 states.

There are rumors that mixing DEX-COOL with standard green (non-OAT) coolant causes a chemical reaction that produces sludge in the cooling system. According to the DEX-COOL manufacturer, however, "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."

According to internal GM documents, the ultimate culprit appears to be operating vehicles for long periods of time with low coolant levels. The low coolant is caused by pressure caps that fail in the open position. (The new caps and recovery bottles were introduced at the same time as DEX-COOL). This exposes hot engine components to air and vapors, causing corrosion and contamination of the coolant with iron oxide particles, which in turn can aggravate the pressure cap problem as contamination holds the caps open permanently.

Typically OAT antifreeze contains a orange dye to differentiate it from the conventional glycol-based coolants (green or yellow). Some of the newer OAT coolants claim to be compatible with all types of OAT and glycol-based coolants; these are typically green or yellow in color.

My comment: USE DEX-COOL IN A FORD AT YOUR OWN RISK!

Ray
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Old 08-19-2009
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good info^^ i disagree with the compatability of conventional and dex-cool though. ive experienced the sludge effect first hand when the stupid oil change guy topped off my wifes blazer with dex-cool after i had converted it to conventional due to the dex-cool intake gasket issues. i had to flush and replace a few parts of the cooling sytem becuase of the damage it caused.

Last edited by 01_ranger_4x4; 08-19-2009 at 08:00 AM.
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Old 08-19-2009
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Quote:
Originally Posted by Clem View Post
This was taken from Wikipedia, the link is for the rest of the article.
Antifreeze - Wikipedia, the free encyclopedia

Organic acid technology

Certain cars are built with Organic Acid Technology (OAT) antifreeze (e.g., DEX-COOL), or with a Hybrid Organic Acid Technology (HOAT) formulation (e.g., Zerex G-05), both of which are claimed to have an extended service life of five years or 240,000 km (150,000 miles).

DEX-COOL specifically has caused controversy. Litigation has linked it with intake manifold gasket failures in GM's 3.1L and 3.4L engines, and with other failures in 3.8L & 4.3L engines. Class action lawsuits were registered in several states, and in Canada, to address some of these claims. The first of these to reach a decision was in Missouri where a settlement was announced early in December, 2007. Late in March 2008, GM agreed to compensate complainants in the remaining 49 states.

There are rumors that mixing DEX-COOL with standard green (non-OAT) coolant causes a chemical reaction that produces sludge in the cooling system. According to the DEX-COOL manufacturer, however, "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."

According to internal GM documents, the ultimate culprit appears to be operating vehicles for long periods of time with low coolant levels. The low coolant is caused by pressure caps that fail in the open position. (The new caps and recovery bottles were introduced at the same time as DEX-COOL). This exposes hot engine components to air and vapors, causing corrosion and contamination of the coolant with iron oxide particles, which in turn can aggravate the pressure cap problem as contamination holds the caps open permanently.

Typically OAT antifreeze contains a orange dye to differentiate it from the conventional glycol-based coolants (green or yellow). Some of the newer OAT coolants claim to be compatible with all types of OAT and glycol-based coolants; these are typically green or yellow in color.

My comment: USE DEX-COOL IN A FORD AT YOUR OWN RISK!

Ray

Just remember that "The Regular Joe" can add information to Wiki even if it's not 100% accurate.

As for the OP's question...............DO NOT USED DEX-COOL in your Ford. My 01 has a sticker under the hood on the header panel by the rad showing a red X through a bottle of orange coolant and a green check through a bottle of yellow/green coolant.

Also check your owners manual, I'm sure it will say something similar in it.
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