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Engine & DrivetrainDiscussions about the engine and drivetrain of your vehicle.
This is a discussion thread titled "Another ATF/Mobil 1 Questions", within the Engine & Drivetrain forum, part of the Technical & Vehicle Assistance Forums category.
Researched both here and the Mobil 1 site for whether the Mobile 1 ATF labeled "Multi-Vehicle Forumula" and "Mercon V" is compatible with my 02' V8.
What's the story here? Is it or is it not. From what I've read, some say yes, some say no. Mobile says yes, but no where in their labeling does it mention Toyota.
Also, if yes, it is compatible, how many of you out there use it?
Yup, M1 does not say which vehicles it is recommended for other than it is compatible with DexronIII/Mercon and MerconV. It leaves the rest to imagination of the user, which actually sucks.
If you are intent to switch to syn, then shell out a little more and go the Amsoil Universal ATF or shell a little less and go with Castrol MV Import ATF which is clearly labelled to be T-IV compatible.
Researched both here and the Mobil 1 site for whether the Mobile 1 ATF labeled "Multi-Vehicle Forumula" and "Mercon V" is compatible with my 02' V8.
What's the story here? Is it or is it not. From what I've read, some say yes, some say no. Mobile says yes, but no where in their labeling does it mention Toyota.
Also, if yes, it is compatible, how many of you out there use it?
read the article, it says it is ok for Dex2 or Dex3 applications? what is confusing about that? Mobil Multi-Vehicle ATF
i do not use it cause my tranny uses WS ATF but if i had your application i would use it and quite worrying about it and change it not mix it!! Mobil Oil makes quality products plus you can call and talk to an Engineer that will answer all questions 1-800-662-4525 plus they are priced where they do not empty your wallet!!
More inifo for thought: DEXRON - Wikipedia, the free encyclopedia
I would call and ask Mobil on this type cause its different than the one i spoke of. really need to read application carefully and when in doubt i would call Mobil, they will not try and sell you or have you use a product that will mess up your tranny! and you need to put the correct ATF in it cause they had a lotta problems with consumers and even dealerships messing this up!! results were tranny failures due to improper service!
Thats the one I used (with the Mercon V label) for a 16 qt. complete flush about 6 months ago. Shifts smooth as silk, even in very cold weather (mid-teens).
I just did a 5k mile 4qt drain and fill about a week ago and the 4 qts came out so clean and clear it felt like a total waste of time and money (dealer warranty, I had to, to keep the warranty going). If I could pour it 1 inch thick on top of newspaper I would still be able to read the print, it was that clear. Good stuff.
the one i mentioned said down near the bottom of article DexII & DexIII ? both i guess would work but i would still cal Mobil , they are customer friendly to the max! the one yall used does not say Dex II which i think was oem in your manual?
Mobil 3309 ATF( It's not a synthetic.) or Toyota Type T-IV for a full flush or if just a drain pan/ then refill I would go with the Toyota Type T-IV.
I'm fussy about staying with the Toy.T-IV though while under warranty.
After that I would consider alternatives. But I really don't trust Universal ATF' alternatives with Aisin Trannies. Just from experience.
One of the few OE fluids I choose to stay with. T-IV is unique...I also won't say it is the best though in durability . UOA's have shown this.
If it was T-II/III, that would be another story. But T-IV seems to be a different animal. And is not even backwards compatible to anything. Some will counter this.
There was a TSB on this. It also discussed the WS ATF which IS a synthetic and also very different.
I do feel that the Mobil 3309 is certified to Aisin-Werner specs and is ok as an aftermarket alternative. Many Trannie shops are using the 3309. I believe the Toyota Type is equal if not cheaper to get.
I believe Aisin-Werner created the T-IV spec in the first place.(with Toyotas guidance)
I know many are using Other Synthetic ATF alternatives with success, and I cannot dispute the pos. results.
Any ATF that's labled as ok for a Ford Mercon "x" along with a Toyota Type T-"x" is bad for either types of Trannies.
The qualities of both specs simply cannot be ideally achieved in a universal package.
I have asked this so many times at many rebuilder shops.
Dealers generally don't know or understand transmissions, short of doing a replacement or service. Dealers never rebuild them. This is just Industry practice.
Only a rebuilder will understand how a specific fluid will interact with a specific trans. It's almost always about the clutches and pressure design.
Has anyone noticed ExxonMobil has many different types of ATF's?
There's a reason...
Again, yu be the judge.
LT
Last edited by LifeTech; 12-23-2007 at 08:12 PM.
Reason: spel
The qualities of both specs simply cannot be ideally achieved in a universal package.
I'm thinking that Mobil 1 full synthetic would be ok, especially b/c I intend to change the ATF pretty regularly (every other oil change) after a good pan and filter cleaning and flush.
You make a pretty interesting point. Instead of the 3309, what do you think about Mobil 1's synthetic ATF for the Tundra?
rich29_cal, what fluid does your owners manual specify? If you don't have the manual. then your transmission fluid dipstick will be engraved with the correct fluid to use (look halfway down the length of the dipstick)
If your manual says to use Dexron II or III then Mobil Synthetic ATF can be used. If your manual says to use Toyota Type T-IV then Mobil Synthetic ATF cannot be used.
I have 14 years experience using Mobil Synthetic ATF and I have found it turns dark just as fast as conventional Dexron fluid and there is just as much wear debris in my transmission oil pan compared to compared to conventional Dexron fluid. I was naive 14 years ago so I bought into the synthetic hype and didn't fully realize Mobil never directly claimed use of synthetic would increase transmission life 1%, 10%, 50% etc.
Now I realize Mobil used SUBLIMINAL pursuasion; i.e. terminology that gets the public to IMAGINE synthetics substantially increase transmission life.
I get your point KathyR. They way I figure it: can't be worse than conventional oil. It's no secret I know, service interval is just as, if not more, important than type of oil. That being said, I get a warmer feeling using syn. I guess you can say the ads are working on me.
Another ATF/Mobil 1 Questions
Mobil Oil makes quality products plus you can call and talk to an Engineer that will answer all questions 1-800-662-4525 plus they are priced where they do not empty your wallet!!
using syn. I guess you can say the ads are working on me. 