Neither this or their syn blend multi vehicle ATF list any specs for Toyotas. My truck takes Type IV fluid I believe and want to make sure this is okay to use for the next service. It's a multi vehicle formula but I don't see why it has so few specs listed. Open to suggestions to other brands to use if this isn't compatible.
https://mobiloil.com/en/automatic-transmission-fluid/synthetic-atf
Is Mobil 1 ATF okay in a Toyota transmission?
- Thread starter jongies3
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Probably can use it without any issue. I've run Valvoline Maxlife (low viscosity) in that same transmission and it worked just fine. I don't think this transmission is very picky about fluid.
Why not use Pennzoil Synthetic High Mileage ATF? It does list compatibility with Toyota T-IV and is cheaper than the M1 too.
It is my understanding - correct me if I'm wrong - that Toyota T-IV is Mobil 3309. That is what I was using in my Lexus transmission asking for T-IV.
https://mobiloil.com/en/automatic-transmission-fluid/3309-atf
You need to use this fluid from Mobil
https://www.mobil.com/English-CA/Passenger-Vehicle-Lube/pds/IOCAMobil-ATF-3309
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They wouldn't specify it on the fluid I mentioned without specifying it on the mutli-vehicle formula if either could be used. That's what I'm getting at. If it isn't listed don't use it to be safe. It's not worth risking it.
The Mobil synthetic is a DexIII type fluid. T-IV is in fact based off of DexIII, but a different add. pack. Use the 3309, or another real TIV. I saw the Aisin brabded TIV at jet.com the other day for pretty cheap, like $4.40/qt.
I currently have 3309 in our Lexus and it does run smoother than in the past when I tried Maxlife or other “compatible” fluids, including full synthetics. From here out, it will be 3309 or Aisin TIV, or other TIV specific blends from reputable refiners like Ravenol or Idemitsu.
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Call XOM and ask, when in doubt that is sometimes the best thing to do.
Funny Story, I think, 
, I'm the landlord of a auto parts store, One of my cars calls for T-IV fluid, I needed a qt. So I stop in and ask for a qt of Toyota T-IV fluid, Don't recall the brand, but it was a name brand. I read the label, it did not say T-IV fluid, and I told him I need T-IV fluid, So he picks up the bottle and reads it to me, yady yady yada "For All Automatic Transmissions" I said it don't say T-IV, so he tells me again "For All Automatic Transmissions" this went back and forth 1 more time, I said " BS, I'm going to to find some T-IV fluid somewhere, I'll be back the 1st of the month"...
, I'm the landlord of a auto parts store, One of my cars calls for T-IV fluid, I needed a qt. So I stop in and ask for a qt of Toyota T-IV fluid, Don't recall the brand, but it was a name brand. I read the label, it did not say T-IV fluid, and I told him I need T-IV fluid, So he picks up the bottle and reads it to me, yady yady yada "For All Automatic Transmissions" I said it don't say T-IV, so he tells me again "For All Automatic Transmissions" this went back and forth 1 more time, I said " BS, I'm going to to find some T-IV fluid somewhere, I'll be back the 1st of the month"...
Mobil 3309 is a top notch fluid, and quite reasonable in price.
Mobil 3309 / Toyota T-IV. The older vehicles are more forgiving on ATFs compared to the finicky new ones.!!
Sticking with either will be more suitable for a good night sleep
Nothing wrong with M1, but Castrol Synthetic and Maxlife are better 
In what way are they "better"?
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