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Old 12-29-2006, 06:19 PM   #41
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I think he ment the cooling system had a lot of aluminum, LIM ,Radiator etc. Not sure

Below are some of the posts I printed out when I was trying to decide, all but the last one are from JR's3800 and I was told he was the man to ask re; coolants. I still am confused, so I guess ill try the PLL and chg it at 36,ooo miles I gues

Quote:
I switched my 95 bonneville to Dex Cool after a good flush, Upper and lower radiator hose replacement, thermostat replacement and new radiator cap... That was well over 5 years ago... But in that time I have replaced 2 water pumps Factory one died at 85,000 miles... Autozone unit died 1 year later( GM used a substandard part on my Bonneville )... The last one has given me 3 or 4 yers with no issues at all, and I still have the Dex cool in there... I switched to Dex Cool in my 95 Bonneville 5 years ago.... I have had no problems with it...
Quote:
well over 7 years of ownership, and I have not had 1 single issue with dex cool
Quote:
The last 3100 he worked on was a 97 with 180,000 miles on it... It had dex all of its life... The intake gaskets finally failed, the lady ran it hot and killed the head gaskets... 180,000 and I have seen soo many reports of people blaming dexcool for their problems...
Quote:
Sad part is that I have seen the Green coolant in a 3100 with the exact same results... Some before 100,000 some after 150,000 miles...
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I will continue to use Dex In my 95... I have had no issues... I know people at 150,000-200,000 on dex and they to have had not 1 single issue...
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Dex cool does not have silicates that adhere to alluminum or cast iron for that matter... Dex will only protect what it actually touches, if an air pocket develops or the air is not blead out of the system then it will become a problem...
Quote:
The only time I have ever seen Dex Cool sluge in a system is when Green was mixed with it, and the coolant was not Dex Cool compatible..
Quote:
The DexCool is not harmful to the system and will not wreck coolant systems. It is running in WAY too many cars perfectly fine (including a LOT of 4.3 V-6 engines) for it to be a disaster. I have personally seen a GREAT deal of testing on the DexCool product before and after it was released from production and it has always performed admirably. There have been engines from livery service run to 250K and 300K with DexCool and the cooling systems, water pumps, coolant jackets, etc....look like brand new. DexCool works fine
]

Now I know why I use Paxil, lol
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Old 12-29-2006, 10:43 PM   #42
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How OLD are those posts? They mean nothing without a date. I spoke with Don earlier on the phone today and he confirmed his use of DEX COMPATIBLE.

He SWITCHED about 2 years ago. I remember when he did. So posting all the quotes you did actually serves no purpose here. Can we get back on topic?

DEX is bad news. That'* been confirmed time and time again by our members and many failures in and outside our Forum. It'* backed up by a class-action lawsuit.

So let'* steer this topic back to where it should be. For those that have lost track, please go back to the original post and read it.
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Old 12-29-2006, 11:27 PM   #43
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not sure the age of the posts, I believe they were 2004, but not sure it really matters either. He stated very clear that he ran the coolant over 7 years with no problems, No issues knew people that had 200k miles with no issues, my questio,n and it still satnds, is for JR noone else, is when did it finally become an issue with Jr and what was the issue. Will, its hard to believe he was so hell bent on it being a fine coolant with years of good sucess now its the "devil" I appreciate your insight but I would rather hear from the guy who posted all his good sucess and thats JR so please let him answer the question.. When did he decide that Dex was bad news, from reading JR'* posts I NEVER thought he would switch back. Again I think he can answer my questions better than anyone because he is the one who posted the great sucess ! thanks again for your insight and I believe this does pertain to the orignal post .Thanks again
I know I for one and I believe Bill Buttermore was saying he would not use the Dex. So I guess thats how this got to be a question on the Dex because the guy is flushing his coolant so it seems relevant. I don't trust the Dex either but i guess it just from reading all the bad press on it, but i dont like the green either. I ill probaly use the PLL like I said before but I still am curious about why JR changed and this is probably the place I should ask him. Thanks again Will
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Old 12-29-2006, 11:35 PM   #44
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Quote:
Originally Posted by osweld
not sure the age of the posts, I believe they were 2004, but not sure it really matters either. He stated very clear that he ran the coolant over 7 years with no problems, No issues knew people that had 200k miles with no issues, my questio,n and it still satnds, is for JR noone else, is when did it finally become an issue with Jr and what was the issue. Will, its hard to believe he was so H*** bent on it being a fine coolant with years of good sucess now its the "devil" I appreciate your insight but I would rather hear from the guy who posted all his good sucess and thats JR so please let him answer the question.. When did he decide that Dex was bad news, from reading JR'* posts I NEVER thought he would switch back. Again I think he can answer my questions better than anyone because he is the one who posted the great sucess ! thanks again for your insight and I believe this does pertain to the orignal post .Thanks again
Osweld, I speak with Don on an almost DAILY basis. I know what he has in his car, and why. That isn't the topic here, and the topic has drifted far beyond this:

Quote:
How does one complety drain the coolent to put in the Prestone Dex Cool?
If you have something to contribute ON topic, please do so. Otherwise, run whatever coolant you wish, because what we say obviously means nothing to you despite the warnings and opinions of nearly every Gearhead on our Staff, or start another topic. Please do NOT ask jr's3800 via PM, but feel free to PM him a LINK to a new topic that you will start. We do not answer technical questions via PM.

In the meantime, if anyone would like to further contribute to this:


Quote:
How does one complety drain the coolent to put in the Prestone Dex Cool?
Please feel free to do so.
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Old 12-29-2006, 11:53 PM   #45
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So I should start a brand new topic just so i can ask him why he changed coolants after having such good luck ? Im kinda new here so I am not 100% whats proper protocol. If I need to start a brand new post just to hear him tell me I will be glad to do it. By the way I am changing my Dex out like I already said 3 times
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Old 12-29-2006, 11:58 PM   #46
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or start another topic. Please do NOT ask jr's3800 via PM, but feel free to PM him a LINK to a new topic that you will start. We do not answer technical questions via PM.
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Old 12-30-2006, 09:31 AM   #47
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bill buttermore - I was just going to mention to you that I haven't had any trouble with the Prestone Dex-Cool; but to be fair, I should mention that I change it out every 6 months. Overkill you say? Well, I don't do a flush; I just drain the radiator/overflow tank and refill. I figure if I change it out often enough, I won't have to bother with the flush.

Oh, and the only reason I run the Dex-Cool rather than plain green stuff is because I like the pretty orange color that turns red when mixed with distilled water.
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Old 12-30-2006, 09:36 AM   #48
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Mac, preventing it from going 'sour' on you may be the best thing you can do next to getting rid of it. But it would still be interesting to inspect your LIM gaskets nonetheless.
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Old 12-30-2006, 12:19 PM   #49
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Quote:
Originally Posted by MACDRIVE
bill buttermore - I was just going to mention to you that I haven't had any trouble with the Prestone Dex-Cool; but to be fair, I should mention that I change it out every 6 months. Overkill you say? Well, I don't do a flush; I just drain the radiator/overflow tank and refill. I figure if I change it out often enough, I won't have to bother with the flush.

Oh, and the only reason I run the Dex-Cool rather than plain green stuff is because I like the pretty orange color that turns red when mixed with distilled water.
Dex seems to work fine as long as: 1. There are no air leaks or trapped air in the engine. That is to say, the cooling system is perfectly bled. 2. It has not been left to deteriorate beyond the recommended 5-year change interval. and 3. It has not been mixed with other types of coolant. You may be just fine doing what you are doing.

The problem is our engines tend to trap air and are hard to completely bleed. The UIM/LIM slow leak can introduce air without the owner realizing it. When air gets to the stuff, it doesn't just lose its anti-corrosion properties, it becomes acidic. But, as long as you keep air away and keep it fresh you are probably gonna be just fine.

For me, I would like the reassurance that if I develop a leak or don't completely bleed the system, that I have not created an enemy within. That'* why I use and recommend others use the new "mixes with any color" coolant. As far as we know, it has none of the evil tendencies of Dex and claims a change interval just as long - 5 years.

I really can't see why there would be any argument against using the "mixes with any color" (G05 spec) coolant, other than those who might say it is too new to know how it will perform over time. But Mercedes Benz has been using it since the early 80s with apparently no problems. Certainly no problems similar to Dex.

I'll have to try that red distilled water thing. I've never seen that.
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