Dexron III or Toyota WS ATF transmission fluid. What ATF are you using?

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I use Valvoline MaxLife and a MightyVac to extract the fluid. You can get over a gallon out through the dipstick. Super easy.

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On the A750F filler is located as shown in the FSM LH rear.

Back to the fill plug and O ring. The online or dealer parts schematic relate the corresponding fill plug part number- filler hole or plug doesn't present clearly in the image so it leaves you guessing. Makes it hit or miss ordering the right part. Frustrating but its one of those part diagram anomalies you get sometimes.

Fill plug torque Spec: 39Nm/29ft lbs

edit: added the parts diagram

View attachment 1633252

29ft-lbf seem like a lot of torque for and bolt with rubber O-ring. It is what FSM states.

The bolt/plug up front looks too small, and I believe it's may be test hold for a pressure gauge.

Part # in picture is for drain & check plugs. O-ring is circled on the fill plug may be 90301-15004.
Extension Housing (ATM) for 2007 Toyota Land Cruiser
Transmission A750 Fill O-ring and drain & check washers.webp

The LH Rearward bolt is larger and looks like a fill plug, just as FSM depicts. I'd not noticed before that it's on the transmission case adaptor sub-assembly rearward of gasket/FIPG seam where it mounts to the transmission. Looks like a channel must carry fluid from it forward to the transmission case.
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Interesting you can see this 4Runner transmission below, it has fill plug on the RH of the transmission case adaptor sub-assembly. Transmission is the same as series 100, just transmission case adaptor sub-assembly is different.
Notice the gasket/FIPG separating the transmission case adaptor sub-assembly from the transmission.
Transmission 08 4R L 2UZ-fe (5).webp

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Here some old picture of and 06LC fill plug
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Here the check & drain plug on bottom of pan
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I'll be doing a full exchange on my 07lx with 5sp this weekend. Can anyone describe or post a pic that shows which line is best to pull to catch the old fluid. I've search and seen Paul's pic for an 01 and a few videos/other posts that seem to be using different return lines, perhaps based on model year, but wasn't able to find anything definitive for an 07. I'm thinking it's ideally as far "downstream" (i.e., closest to returning fluid to the trans) as possible to get as much of the old stuff out as I can. Thanks much in advance for any help.
 
It's the same return line for all years. It's just some pull off from below at radiator. I do from above which is after radiator and cooler at PS of radiator near reservoir.

I tap in at last point in transmission return line to catch fluid as I run engine while adding transmission fluid so I don't run low. Always start by draining then filling pan so pump is picking up fresh.
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Filling of the 04-07 is a PITA
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Rubber O-ring is on fill plug and can be reused. Others drain & check are metal and must be replaced.
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I know this is page 4 by now (and I've mostly only read page 1)....

The Toyota manual isn't always right, nor is the system that indicates what to use.

1991 MR2 is a perfect example. The manual S54 used in that car didn't change and was very similar to other manuals Toyota had used. The manual suggested using 5W30 in the transmission. In 1992 the Manual said to use 70W90. All other vehicle manuals of that era have Toyota manual transmissions use gear oil. Toyota never fixed their systems (last I heard, at least, many years ago) - and in the MR2 world there was much debate as to which oil to use - which is gear oil. 1991 was the first year of the 2nd generation MR2 in the USA, previous years they used C ane E series transmissions.

If 2003 was the first year of certain models to have the 5sp auto, unless someone can indicate a technical difference between the transmissions in 03 and 04, then I would suggest running the fluid recommended in the later years.
 
It's the same return line for all years. It's just some pull off from below at radiator. I do from above which is after radiator and cooler at PS of radiator near reservoir.

I tap in at last point in transmission return line to catch fluid as I run engine while adding transmission fluid so I don't run low. Always start by draining then filling pan so pump is picking up fresh.
View attachment 1681113


Filling of the 04-07 is a PITA
View attachment 1681116 View attachment 1681117 Rubber O-ring is on fill plug and can be reused. Others drain & check are metal and must be replaced.
View attachment 1681118

Perfect. Thanks again.
 
I use M1 full synthetic MV ATF in 98-02 transmission also in all toyota Power steerings, works great. M1 stated as compatible with Dexron II or III, which 98-02 calls for.

In 03 Toyota change to recommending T-IV for which we have no Dexron equivalent recommendation I know of.
In 2004 Toyota change recommendation to Toyota WS. Which we have no Dexron equivalent recommendation I know of.

Mobil/Exxon makes all these Toyota fluids to my knowledge. Some it states Exxon right on the jug. They even have a WS that's in a Mobil 1 can, but not in USA. I've asked Mobil 1 if we can use M1 MV ATF in place of WS. They said no, it not recommended.

Would it be ok to run M1 in place of WS, probably. But I've not the guts to try, without Mobil approving. So I just use WS in newer transmisson.

Fluid keep evolving. The days of grabbing whatever off the shelf are going, as there's myriad of choices. Each have specific custom composition.

I would really like to hear of some long term alternative ATF fluids use stories, from other than Max life.
 
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29ft-lbf seem like a lot of torque for and bolt with rubber O-ring? Where did you find that in the FSM?

Not familiar with this particular model, but is is probably a trapped o-ring in a boss. Once the plug is down, it creates the right volume for the o-ring to sit in without being able to over-squeeze it. The torque ensures it will not come loose with vibration and temperature cycling.

See e.g. this document: http://pressureconnections.com/customer/prcoco/customerpages/literature/Steel_O-Ring_Boss.pdf
 
It's still advisable to check level at proper transmission fluid temperature, and set by the book. Transmission level either too high or too low may cause issues.

Not sure if anyone brought up this video regarding no-dipstick ATF fluid levels. I found it very instructive (and a bit crazy to think that mechanics under time pressure would actually go through all this trouble).

 
I have a 2006 and always get the tranny fluid changed at the Lexus shop. They use a pump/vaccum and pass 16-18qts to get a total flush. They get an accurate fill, temp, and total change.
 
If you want to get into a serious O-ring discussion, Parker O-ring book is the bible.
Every thing you wanted to know and more (materials, fluid resistance, interface requirement, etc).

You can ask me how I know if you want to know how I know:beer:
 
Not familiar with this particular model, but is is probably a trapped o-ring in a boss. Once the plug is down, it creates the right volume for the o-ring to sit in without being able to over-squeeze it. The torque ensures it will not come loose with vibration and temperature cycling.

See e.g. this document: http://pressureconnections.com/customer/prcoco/customerpages/literature/Steel_O-Ring_Boss.pdf
I'd never thought about it, thanks! 29ft-lbf is corrected for fill plug torque and 15ft-lbf for drain & inspection plugs, found in FSM and posted a few pages back.
 
Is anyone actually running the Mobil 1 3309 ATF in their 98-02 lx470s and series 100s? Seems to be mentioned but not much certainty on use. It is the same atf that I run on our Volvo XC70 with the Asain transmission and I have a case in the garage. Just want to get some real results from fellow mudders before taking the leap.
 
Is anyone actually running the Mobil 1 3309 ATF in their 98-02 lx470s and series 100s? Seems to be mentioned but not much certainty on use. It is the same atf that I run on our Volvo XC70 with the Asain transmission and I have a case in the garage. Just want to get some real results from fellow mudders before taking the leap.

Is it Toyota WS rated?
 
Valvoline full synthetic for diffs and tranny. It’s readily available, has great history in auto circles and great price.
 
According to Mobil 1 yes but wanted real world input here. Like I said, I have a case left over from my xc70 which has a MUCH more finicky transmission and was curious if anyone ran it on the cruisers.

Aye, got it now.

All I can give you real world experience on is the Valvoline MaxLife, I use that in my transmission with zero problems, 2yrs so far and 25,000? miles.

I also use it in my power steering.
 

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