Thread: Opinions on Dex 6...

Originally Posted by Zef_66

So I still go back to my original point. Do you tell your customers "This is what GM recommends, but this is what our dealership does just because we feel we know better?"

When I asked that the first time, you laughed and said that Dexron VI is not recommended four 97-03 GPs. But from I read, straight from GM, it is recommended. So what's the deal. Did you just not know what GM recommends and thought you would post anyhow? Not to mention you said you have bulletins that show what cars get what fluid. Post them up if you have them.

If not, please don't post about it. If you don't know what you are talking about, just don't post. Because posting bad information on a forum where someone who doesn't know any better could take it for gold because "you work parts at a GM dealership" could be very detrimental.

Any time I say that I work at a dealership, its because I looked up the information. You have a bulletin, I agreed on what it says. It is right, but my catalog, specifically, the program given to parts and service by GM, and updated DAILY by GM says what fluids to use, part number, capacities, etc... It is DIFFERENT, still recommends the DexIII which is why I said that it won't be going away. The original statement by you. Unfortunately I cannot post the information because I don't feel like making tons of screenshots just to prove a point.

You have to argue and it reads like your all butthurt over this. Do what you want, say what you want, free country, its your right. But I still stand by the fact that most "MOST" people on this forum will still be rocking an original transmission, filled with original DexIII fluid and telling them to flush it out and fill up with DexVI because GM says so, will likely result in future failure when the internals are not really designed to handle the additives that come in it. Which is why 90% of the people on this forum will agree, stay with DexIII in these trannys. Infact call over to TEP or Tim King and ask what fluid they recommend. They build them for hard driving and/or racing. See what they say.

Originally Posted by TLSheff

Any time I say that I work at a dealership, its because I looked up the information. You have a bulletin, I agreed on what it says. It is right, but my catalog, specifically, the program given to parts and service by GM, and updated DAILY by GM says what fluids to use, part number, capacities, etc... It is DIFFERENT, still recommends the DexIII which is why I said that it won't be going away. The original statement by you. Unfortunately I cannot post the information because I don't feel like making tons of screenshots just to prove a point.

You have to argue and it reads like your all butthurt over this. Do what you want, say what you want, free country, its your right. But I still stand by the fact that most "MOST" people on this forum will still be rocking an original transmission, filled with original DexIII fluid and telling them to flush it out and fill up with DexVI because GM says so, will likely result in future failure when the internals are not really designed to handle the additives that come in it. Which is why 90% of the people on this forum will agree, stay with DexIII in these trannys. Infact call over to TEP or Tim King and ask what fluid they recommend. They build them for hard driving and/or racing. See what they say.

The bulletin I published has been around and circulated on many sites by many people. It is commonly known. Why would it be different than your 'dealer only' computer system? Maybe that is something as a GM tech that you should investigate instead of just assuming one way or another. I would bet that the system just wasn't updated with the newer information for the older cars because of how cumbersome it would be to do so.

But I have been around this forum, and many others long enough to know what most people run and recommend. And most do not recommend to use the old, outdated Dexron III fluid. Most people, including on this very forum, have switched over to the new, improved, and overall completely better Dexron VI fluid. I have seen no failures from someone switching over to Dexron VI fluid at all. In fact, I have been running it in my 280k mile original transmission for years now and probably have 120k miles and several changes with Dex VI. I have no leaks, no failures, no issues whatsoever. None. If it were the case that switching over to Dexron VI fluid was causing issues, it would be all over the internet and people would be screaming bloody murder that GM is recommending something that ruined their transmission. There would be class action lawsuits and a huge uproar.

But fact of the matter is, there is none of that. Dexron VI fluid has been widely accepted by most people that use it. Yes, there are a few hard core racers that need to use a different fluid because of the high stress and high RPMs that they subject their transmission to. But for most people and most cars out there, Dexron VI is the recommended fluid and that which will work the best for them, with no issues in the long run.

And I do know that GM has publicly released exactly what is in that bulletin. That all makes and models that used any previous mix of Dexron fluid should now be using Dexron VI.

Originally Posted by Zef_66

And I do know that GM has publicly released exactly what is in that bulletin. That all makes and models that used any previous mix of Dexron fluid should now be using Dexron VI.

So, if all makes that use DexIII should now be using DexronVI... why is it still being made and sold???

IF it is perfectly acceptable, recommended even, to replace the old fluid, which is half the price, why wouldn't it be pulled off the shelf as an outdated design. This would put more money to all the businesses, as you would have to pay the extra money, and it is a better fluid so it shouldn't have to compete with the outdated design.

GM discontinues parts all the time, without warning or much reason. Yet, this old fluid that shouldn't even be used is still available for sale and order.

Originally Posted by TLSheff

So, if all makes that use DexIII should now be using DexronVI... why is it still being made and sold???

IF it is perfectly acceptable, recommended even, to replace the old fluid, which is half the price, why wouldn't it be pulled off the shelf as an outdated design. This would put more money to all the businesses, as you would have to pay the extra money, and it is a better fluid so it shouldn't have to compete with the outdated design.

GM discontinues parts all the time, without warning or much reason. Yet, this old fluid that shouldn't even be used is still available for sale and order.

Dexron III approved fluid isn't made anymore. GM retired the licensing for Dexron III fluid at the end of 2006 I believe. Not sure if GM still makes their own, but according to the bulletin from GM that I posted, the part numbers were being replaced.

But what does happen is companies that have made Dexron III approved fluid for years don't stop producing it because it also meets other specs like Mercon for Ford. So they can change the wording a little bit and advertise it as Mercon/Dex fluid and on the back will say "meets the requirements of" or "for use where Dexron III is specified" and kinda sidestep the issue. But you work for GM, look into it. The license for Dexron III fluid expired the end of 2006 and no more Dexron III approved fluid was to be made after that.