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11-17-2009
what are the consiquences of mixing dex III in the tranny with dex VI?
Stupid mexican at Vatozone told me to run the dex merc in my tranny when i did my filter and after looking online it says it calls for dex VI? is this true and did i mess anythign up by doing this?
11-17-2009
Wait, what exactly did you run? Dex III, Dex VI, or Mercron?
Dexron is a GM spec fluid. The old spec is Dexron III. This was replaced a few years ago with Dexron VI. All GM transmissions old and new can run Dexron VI fluid. And they should as that fluid is much better than Dexron III.
Mercron spec fluid is not a GM approved fluid and is not recommended in GM transmissions.
11-17-2009
So does Dex III mix with Dex VI?
11-17-2009
Yes. You can mix the two.Originally Posted by chantspel
11-17-2009
crap i put in dexmerc even though it is not gm approved do you think it will harm anything? *EDIT* it says on the back that it is compatiblle with 98-2005 gm cars where dex III is required. sounds gm approved to me
11-17-2009
Ford and GM have very similar fluids, (most likely the same) I know the Dex VI is similar to the new mercon they use in the new 6 speed auto fords because they're the same transmission.
Hence people selling "Dex/merc" tranny fluid.
11-17-2009
A lot of auto parts stores will sell you Dex/Merc generic fluid because the DexVI is nearly twice the price per quart, and that upsets the cheap-o's. When I have someone come in and ask for fluid on a newer GM car, I'll recommend the DexVI, but also show them the generic and let them choose. BTW, Wal-Mart sells DexVI cheaper than Autozone sells Dex/Merc generic.
11-17-2009
yea your trans will be fine
11-17-2009
What you probably used was a Mercron Spec fluid. Meaning that it is an approved Mercron fluid. But it also is compatible with the Dex III fluid. But it might not meet all the specs. Fluid specs are kinda funny.
But you will be fine. Just in the future stick to Dex VI fluid and don't listen to the guys trying to sell you parts behind the counter.
11-17-2009
Some you can trust. I'm the one who sends people to the dealership for fluids if we don't have the exact one that is designed for that app. In otherwords, we carry the "regular" green coolant, dexcool, powersteering for GM's and fords. Ford type F tranny fluid, ATF +4, Dex III, Dex VI and one other standard for Allision transmissions and the rest I won't reccommend. Straight to the dealer for the rest.
Some could say, I'm don't really rep my store all that well, but my defense is, I don't like selling people sh*t or the wrong sh*t.
11-18-2009
I agree and am glad you are that way. But I have heard too many counter jockeys recommend the wrong stuff, or make recommendations that they shouldn't be without knowing a lot more information. A general rule (in most of life) is take everyone's advice with a grain of salt. Even my own. Do your own research and come up with your own conclusion. Do just take some random dude's opinion on it.Some could say, I'm don't really rep my store all that well, but my defense is, I don't like selling people sh*t or the wrong sh*t.
11-18-2009
I can second that, a lot of the stuff I hear other employees saying tends to be complete BS.
11-18-2009
Dang! Wanna come down here and work at my store?
11-18-2009
Type FA is for Ford
Dexron Mercon is GM - no matter the number
Don't mix
11-18-2009
Haha, paying more than $9.75 an hour? Soon to be $10.50 when minimum wage goes up in the spring.
IRRC ford type F is more viscous to support the odd tranny setup ford used in the 70's and some 80's cars. You basically can't mix that with anything but itself.
Ford has switched to Mercon since then.
11-18-2009
The fluid you bought sounds like the container that says Dextron III/Mercron.
Simply put that's the replacement fluid that meets the Dex III and Mercron specs.
11-18-2009
possibly...Haha, paying more than $9.75 an hour? Soon to be $10.50 when minimum wage goes up in the spring.
11-18-2009
Consider it'd cost me 30 hours of wages just to get there.
11-18-2009
What? Dexron is a GM specification for their tranny fluid.
Type F/FA is the old Ford tranny fluid specification.
Mercon is the new (1987+) fluid specs for Ford tranny fluid. The newest being Mercon V.
So no, Dexron does not equal Mercon. They are not the same. They can not always be used interchangeably. So please, please, please, don't offer wrong advice.
11-18-2009
I've never seen a bottle of Mercon or a bottle of Dexron, separately. The only thing I have ever seen is "Dexron/Mercon" followed by a roman numeral, depending on what the latest formula is and I've ran it in every transmission I've ever owned (all GM) up until I got my hands on a 4T60E, where I switched to Mobil 1. If it's available in some other way, then that's news to me. Type FA has been for fords as long as I have known. If there's something new, then that, too is news to me. I can't say I know a whole lot about the ford since I'm not on their team, so I won't debate you.
Are you saying you can purchase a bottle of "Dexron" or a bottle of "Mercon" - either one you want? Maybe I misunderstand you. The last case of ATF I bought was Dexron/Mercon IV, I believe. I run it in my 4L80E and my 4T60E. My 4L60E gets Mobil 1 ATF only.
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