Yeah your right. Any intellignet person would have to disregard the hydrualic priciples & theory that automatics transmissions have operated on for decades & the word of an oil company representative for the "experts" on the internet! My Bad! rayer: I guess there hasn't been a minivan trans failure since they switched fluids then.No claim - fact. No amount of tranny theory or fluid speculation changes that. If you believe you can get away with running ATF in any trans for any reason (despite the long-winded explanation(s)) you are serious misguided. Just ask the thousands of unhappy minivan owners who got Dexron in their Ultraglides back in the 90s.
Here's the real deal:
http://www.allpar.com/mopar/transmissions/fluids.html
http://www.allpar.com/fix/trans.html
Uh, that too would be incorrect. The high failure rate in the first generation Chrysler electronic transmissions was predominantly due to unwitting owners and shop techs using Dexron or a Dexron and Lubeguard substitute instead of following the manufacturer's specification for ATF+3. This was determined by the factory and published in several tech documents. I'm not going to look them up for you. After the current 7176 ATF+4 spec was finalized Chrysler released a TSB instructing the dealers to standardize on that service fill for all but a few specific transmission which were specified in the TSB. I'm not going to look that up for you either. This was done to eliminate the confusion about the fluids which was costing Chrysler boatloads of money for in-warranty failures. It's all factual history. You know the old saying - "People who don't learn from history are condemned to repeat it."There is no evidence or case studies to prove that conventional ATF causes failure by itself.
Synthetic piss? No! No! I'm just kidding!! :violent1: Lol!I knew this was going into an oil piss match. lol.
Those new 4-speed autos got put into lots of Chrysler vehicles. That's why it was such a big deal and almost everyone who was concerned with it either on the customer or vendor side was aware of it on some level. Mostly Chrysler just got a bad rap from the idiots who parroted the junk tranny stories.BTW, who cares what minivans needed during whatever years? :bootysha:
At long last! Someone who actually knows that which they speak.The A-604 was Chrysler's first , if not thee first , auto trans which had no bands ; it was all clutches .
That alone would indicate the necessity of a unique trans fluid formula , henceforth "+3" , ad seq.
Those were 2-speed automatics , right ?HONDA Produced the bandless transmissions as their Hondamatic H2 way back in the early '70s & in later versions of the H3 & H4. Used Dexron fluids in them well into the 90s. All were band less transmissions.
I appreciate your accolades , thank you .At long last! Someone who actually knows that which they speak.
Thank you, sir. :cheers:
H2 was a 2 speed, H3 was a 3 speed, H4 & H4A 4 speeds. Dexron was the ATF specified & was factory fill until Honda switched to Z-1, but still said Dexron II or equivalent. No, Type "F" was not specified. Honda A/Ts have been, with the exception of the Isuzu built Passport, band less design. I just wanted to clarify the timeline of the band less A/Ts.Those were 2-speed automatics , right ?
Like I've said previously , DexRon used to be different ( ATF , Suffix 'A') prior to 1973 ; I'm certain that Honda didn't specify ATF , Suffix 'F' in their transmissions .
Then there were the Toyo-Matics , which were based upon the PowerGlide design ...
Olive oil is what my doctor recommends. But he's fat like me!can't wait for the which oil is better discussion next...
Okay , sounds right . Thanks for clarifying !H2 was a 2 speed, H3 was a 3 speed, H4 & H4A 4 speeds.
DexRon II was released in circa 1973 , after the ban on Sperm Whale Oil.Dexron II or equivalent.
Honda A/Ts have been, with the exception of the Isuzu built Passport, band less design. I just wanted to clarify the timeline of the band less A/Ts.
LOL! Oh you frisky Canadians!;)Extra virgin olive oil is better than standard weight but has a lower lubricity factor and should be used with a stable additive such as KY or Astroglide .
Thank you! :thumleft:ALL torqueflites without a converter clutch(think pre-80's) can get away with almost anything.We have found Dexron fluids work best all around.Type F works great as well,it just has slightly less lubricity,that's only a concern for extremely high line pressures(race only)where the pump actually see rear loading of the inner rotor. As far as all the fancy fluids go,such as +4,mercon V,dex VI,etc. etc.,these came about for torque converter clutch feel,super slick,very viscous fluids,(waste of money in a non-tcc trans)Lonewolf.....you are correct,I know what you meant!