Synthetic transmission and rear end oil?
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CJ3Flyr
Super Moderator
Many of us have done Mobil1, Redline, Royal Purple or Amsoil in the axles & t-case. I don't think there's a real preference.
Far less have changed the transmission fluid as it uses a synthetic (type WS) that Toyota says is lifetime unless you tow. If towing they recommend 60k which is what I'll do. Only genuine Toyota WS fluid or Redline Synthetic is rated for WS service (unless something has changed very recently).
This is a good axle/t-case thread and so is this.
This thread is a great DIY to the transmission fluid changing. There's several links, much discussion etc. There's a bit to wade through but it's good stuff.
:cheers:
Far less have changed the transmission fluid as it uses a synthetic (type WS) that Toyota says is lifetime unless you tow. If towing they recommend 60k which is what I'll do. Only genuine Toyota WS fluid or Redline Synthetic is rated for WS service (unless something has changed very recently).
This is a good axle/t-case thread and so is this.
This thread is a great DIY to the transmission fluid changing. There's several links, much discussion etc. There's a bit to wade through but it's good stuff.
:cheers:
Mike07SE
New member
Transmissions are sealed for a reason, don't go messing with them! In fact, all the people here that say that they are 'servicing' them in their driveways by using the multiple holes and pumping them up through the fill hole are still doing it incorrectly. I work for a manufacturer and the tranny's we have are setup quite similar. It really is important during these procedures that the trans is filled at a certain temperature (ie. exactly 47* C), whilst also having another person run it through the positions while filling. Like CJ3Flyr said, most of us have done the diff's and t-case, the tranny is lifetime unless you tow.
KB084RUNNER
New member
I changed out my diffs & tcase at 4000 miles. Mobil1 75w90LS in the front & tcase and Amsoil 80w90 in the rear diff. Much smoother and less noise from the drivetrain. The trans do at 60k like said before. It is not hard to do but I'll probably have the dealer do a complete flush every 60k.
KB084RUNNER
New member
Mike07SE said:
The 4R trans has a fill & drain hole. The drain plug is at the back of the pan and there is an overflow plug at the midway point on the pan.You drain it and and carefully measure what came out. Re-fill with the same amount plus 1/2 quart. Drive vehicle about 1/2 mile going through all gears. With vehicle idling take the trans oil pan temp with an IR thermometer gun and when at the desired temp range (115-130*F) remove the overflow plug and allow any excess to drip out. Replace plug & torque. You now have the correct amount of fluid in there. NOT rocket science.
The trans holds 5.6 quarts and a drain should get about 1.5 qts out. If you do 5 two quart drain & refills (with some short driving in between)and then do the fluid level check with the overflow plug you will have about 90% new fluid which is the equivalent to a trans flush.
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CJ3Flyr said:I think 5.6 may be close but still off. Isn't the total more like 5.6 + 4 or 6? I think the torque converter holds more than the transmission itself, doesn't it? I may have bad gouge...
:cheers:
The 2003 service manual says dry fill for the transmission is 13 quarts (US)...doesn't differentiate between engines. The 2003 Owner's manual says drain&fill...V8=3.2 quarts, V6=2.1.
Chris, not trying to single you out, just used the last post in the thread to set context.
-Brent
(even though I didn't state that very clearly).KB084RUNNER
New member
riverwolf said:
From the 2006 service manual:
3. TRANSMISSION FILL
(a) Fill the transmission with the correct amount of fluid as
listed in the table below.
(b) Reinstall the refill plug to avoid fluid splash.
Repair Fill Amount
Transmission pan and drain plug removal
1.3 L (1.37 US qts, 1.14 Imp qts)
Transmission valve body removal 3.9 L (4.12 US qts, 3.43 Imp qts)
Torque converter removal 5.3 L (5.60 US qts, 4.66 Imp qts)
Entire transmission assembly 5.3 L (5.60 US qts, 4.66 Imp qts)
I am going to look into this. Because I always thought about 12-14 quarts as well.
KB084RUNNER
New member
I emailed Toyota...I will post their response. Now I am wondering if you add up the listed quantities you get 12.57/qts. So, maybe this is a Japanese to English translation issue.
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KB084RUNNER
New member
Here it is:
Thank you for contacting Toyota Motor Sales, U.S.A., Inc.
We appreciate the opportunity to address your inquiry.
The automatic transmission fluid (ATF) capacity for the 2008 4Runner with 1GR-FE engine is 11.3 quarts.
For further information please refer to Section 8 "Specifications" of the 2008 4Runner Owner's Manual.
We hope you will find this information helpful.
Sincerely,
Ryo Fukuda
Toyota Customer Experience
Thank you for contacting Toyota Motor Sales, U.S.A., Inc.
We appreciate the opportunity to address your inquiry.
The automatic transmission fluid (ATF) capacity for the 2008 4Runner with 1GR-FE engine is 11.3 quarts.
For further information please refer to Section 8 "Specifications" of the 2008 4Runner Owner's Manual.
We hope you will find this information helpful.
Sincerely,
Ryo Fukuda
Toyota Customer Experience
KB084RUNNER
New member
So the dealer says 3.2 quarts come out on a drain fill. So if you do multiple drain fills here is how it would break out to get to 90% new fluid.
Number of Times Changed New Fluid
1 28%
2 49%
3 63%
4 74%
5 81%
6 86%
7 90%
Note: 2 drain fills gets you almost 50% new fluid. Might not be a bad idea if you don't want to spend the $$ on a flush.
Number of Times Changed New Fluid
1 28%
2 49%
3 63%
4 74%
5 81%
6 86%
7 90%
Note: 2 drain fills gets you almost 50% new fluid. Might not be a bad idea if you don't want to spend the $$ on a flush.
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