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Originally Posted by imidazol97
As for recommending changing the DexCool at 24000 or two years, that is not speculation. That is the recommendation of a mechanic who does a car repair talkshow available on the internet at www.55krc.com on Saturdays 4-8 pm if you care to listen. Previous program hours are downloadable as MP3 files from home page. He's extremely knowledgeable. He and/or others have indicated the plastics in originals were affected by DexCool and were changed. |
No thanks.
Just because some mechanic on the Internet says so.
We have plenty of old threads at every relevant forum on AF concerning the UIM issue that covers it without re-hashing it. All the original poster has to do is a search and be the judge.
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Originally Posted by imidazol97
The sludging that has occured in some DexCool systems comes with age and deterioration of additives. Another test that one may feel better with is using a voltmeter and grounding one lead and putting the other into the radiator. When the electromotive force generated there is 0.4 volts, it's time to change the antifreeze because it's reacting with the metals.
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I've seen that test pass on GM cars with Dex-Cool as old as 7 years old so it does not prove anything.
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Originally Posted by imidazol97
My UIM has a hole in where the EGR tube deteriorated and coolant started to seep. This occurred at 65-75000 miles. I noticed coolant loss.
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You are just one such case but there are thousands without a similar issue.
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Originally Posted by imidazol97
You're welcome to keep DexCool or any antifreeze in for 5 years if you wish. I change mine and refill with DexCool because of its good chemical properties for use with aluminum in motors.
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I have with no problems with Dex-Cool. Plus there are other coolants on the market so why use Dex-Cool. Just about all coolant on the market now is similar to Dex-Cool. Based on OAT - Organic Acid Technology. Prestone and Peak extended life are such examples (5 yr/150K miles). No damage to aluminum. What coolant you use is a matter of personal preference not that any one is better.
