El Tigre
I'm Awesome
Trans shops don't like it because they want a generic fluid to use in all transmissions.
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I would’ve used this if it was available locally:They (4L60Es and 700R4s) all look the same inside when I tear them down, and last roughly as long on average, whether they used Dex3, Dex/Merc or Dex6 fluid...I have done several that were fed a steady diet of Dex3 or Dex/Merc for over 200k before needing overhaul...Would Dex6 have materially extended the lifespan of those transmissions? Maybe But probably not, at least not by years or thousands of miles.
I'm not saying any of your above is wrong; GM does recommend it for the legacy 4speeds and I'll recommend Dex 6 for any of the newer stuff..Have plenty of customers that use it in their 700s, older 4L60Es, etc and they like it as well...I run standard dex/merc in my older trucks; newer one (6L80 trans) will see nothing but Dex6.
So in my opinion (and it's just my opinion), at least for the older stuff, I don't see the benefits relative to the cost nor can I tell much of a difference in shift feel/quality based on fluid difference alone, at least in my transmissions which are already set up to shift crisp/quick via mechanical calibration mods, etc. Dex6 will do a better job if temps are consistently above 220, which they really shouldn't be regardless of fluid type. Keeping the trans cool isn't usually a problem for most vehicles; those used in HD or HP applications or simply spend lots of time in hot climates benefit from higher cap trans coolers, so as long as you're not overheating chronically Dex/Merc is fine (again, older vehicles like GMT400 trucks).
The only 'harm' in going with Dex6 over DexMerc is simply higher cost relative to benefit, which is what @Caman96 was really asking about and what I responded with the opinion I did.
Think its more of a difference than that, unless im shopping at the wrong places (definitely possible). But like I said, run it if you want in the older stuff, there's no harm in it. Folks also like Type F for a bit firmer shifts, quite a few of my customers use it in their GM transmissions.Higher cost?
$2-3/gallon in transmissions that cost a grand, or more? Come on, man...
Generic? What do you mean by that?Trans shops don't like it because they want a generic fluid to use in all transmissions.
Nah, not unless it's unable to hold the filter in place on it's own. I tore down a 94 4L60E core that ended up being grenaded inside, massive overheating but the filter seal was in like new condition.Nick do you recommend replacing filter seal with every filter?
How 'bout that "universal" Castrol fluid pictured a couple of posts ago?Generic? What do you mean by that?
Do whatever you want, man. Doesn't impact us one way or another...How 'bout that "universal" Castrol fluid pictured a couple of posts ago?
Believe I will continue using the fluid specified by GM instead of gambling.
How 'bout that "universal" Castrol fluid pictured a couple of posts ago?
Believe I will continue using the fluid specified by GM instead of gambling.
Ford specifies Motorcraft, Dodge-Mopar, Toyota-WSA(Toyota Genuine), Mazda-FZ….ALL manufacturers specify their own brand.Bet few believe any "universal" fluid is better than the only fluid specified by GM.