User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 05-24-2021, 11:48 PM #1
little_titan little_titan is offline
Member
 
Join Date: Sep 2018
Posts: 109
little_titan is on a distinguished road
little_titan little_titan is offline
Member
 
Join Date: Sep 2018
Posts: 109
little_titan is on a distinguished road
Full Synthetic Gear Oil change interval

Decided to post in this section.

This will be my 3rd time doing this service on my 2008 T4R SR5 4x4. Every time i do this service I知 showing minimal fluid wear on my front diff, transfer case, and especially rear diff. For those wondering I am using Valvoline full-synthetic 75w-90 because it is cost effective and I replaced my fluid every 30k.

I have been using my car for 100% normal drives and 0% for towing or off roading.

I have researched on the forums and had little to no luck.

My goal is to not be cheap and at the same time not waste money on changing gear oil too early.

For fully synthetic gear oils, what service mileage interval have you guys been comfortable with...35k? 40k? 45k?

And what gear oil did you use?

Please share your experience, thank you!
little_titan is offline   Reply With QuoteReply With Quote
Old 05-25-2021, 11:52 AM #2
Bossman's Avatar
Bossman Bossman is offline
Senior Member
 
Join Date: Jun 2008
Location: North Bay, ON, Canada
Posts: 1,611
Bossman is just really nice Bossman is just really nice Bossman is just really nice Bossman is just really nice Bossman is just really nice
Bossman Bossman is offline
Senior Member
Bossman's Avatar
 
Join Date: Jun 2008
Location: North Bay, ON, Canada
Posts: 1,611
Bossman is just really nice Bossman is just really nice Bossman is just really nice Bossman is just really nice Bossman is just really nice
Do i really need to change my differential oil?

How often should i change my diff fluid

Rear Diff Fluid Chang Question

Synthetic Differential fluid ?

Which Synthetic Differential Fluid to Use?

What gear oil? V8 4th gen 4x4

Which gear oil in rear diff
__________________
2011 Limited 4WD with NAV: "CDN Package" (running boards, mud guards, all-weather mats, cargo liner, block heater).
Summer: Michelin Premier LTX 245/60R20 on OEM Limited 20" rims / Winter: Toyo Observe GSi-5 265/70R17 on 2018 TRD Off-Road 17" rims.

Previous: 2003 4Runner Limited 4WD V8; 1997 Lexus LS400; 1997 Camry CE; 1988 Celica Turbo 4WD; 1982 Celica GT
Bossman is offline   Reply With QuoteReply With Quote
Old 05-25-2021, 03:38 PM #3
FordF150 FordF150 is offline
Banned
 
Join Date: Mar 2021
Location: nassau bahamas
Posts: 69
Real Name: Tommy Bahamas
FordF150 is an unknown quantity at this point
FordF150 FordF150 is offline
Banned
 
Join Date: Mar 2021
Location: nassau bahamas
Posts: 69
Real Name: Tommy Bahamas
FordF150 is an unknown quantity at this point
I used Valvoline gear oil VAVOLINE 80w – 90 GEAR OIL (conventional) in my 2005 4runner. They had no synthetic where I am.

I did the first ever Drain of three quarts at about 145,000 miles and plan on doing another after another 70,000 miles.

The interval of 30,000 miles isn't necessary IMO, but won't hurt.

I do no towing and no high-speed driving, and over 50 mpg seldom

My diff fluid was ok but black.

Someone posted that differential fluid doesn't ever need service, but I don't know about
that.

I've read some posters go 275,000 miles and never changed the rear differential fluid.

LIKE THIS POST below..

"I've seen many axles live past 300,000 miles on the original lube, but the stuff smells worse than dead dinosaurs should. It's enough to make most guys gag."

He didn't say these differentials had failures.

Last edited by FordF150; 05-28-2021 at 12:24 PM.
FordF150 is offline   Reply With QuoteReply With Quote
Old 05-25-2021, 05:05 PM #4
Drcoffee's Avatar
Drcoffee Drcoffee is offline
Senior Member
 
Join Date: Jan 2012
Location: Somewhere, yet nowhere
Posts: 1,608
Drcoffee is a jewel in the rough Drcoffee is a jewel in the rough Drcoffee is a jewel in the rough Drcoffee is a jewel in the rough
Drcoffee Drcoffee is offline
Senior Member
Drcoffee's Avatar
 
Join Date: Jan 2012
Location: Somewhere, yet nowhere
Posts: 1,608
Drcoffee is a jewel in the rough Drcoffee is a jewel in the rough Drcoffee is a jewel in the rough Drcoffee is a jewel in the rough
Full syn gear oil. 100,000 it doesnt gel or gum up. Most of the wear happens on break-in. Best to do it at 5,000 miles then synthetic every 100,000 miles with a quality lube like Amsoil. Just keep the breather clear.

When I have drained lube after 30,000 miles in the past, it looked like new fluid coming out and it didnt stink like conventional lube does. Its actually cheaper in the long run to go syn
__________________
2007 4Runner Sport 4WD 4.0L 225,000 miles
The real stats on gun murders in America compared to the world (link)
Good riddance to the Clinton Crime Family--> I Voted TRUMPhow痴 it going for you now Trump is gone? Be careful what you ask for. You may just get it.
Drcoffee is offline   Reply With QuoteReply With Quote
Old 06-01-2021, 03:19 AM #5
truc.karl truc.karl is offline
Member
 
Join Date: May 2013
Location: Fl
Posts: 172
truc.karl is on a distinguished road
truc.karl truc.karl is offline
Member
 
Join Date: May 2013
Location: Fl
Posts: 172
truc.karl is on a distinguished road
I use Castrol Gear Oil. My rig seems to like it.
truc.karl is offline   Reply With QuoteReply With Quote
Old 06-02-2021, 11:24 PM #6
little_titan little_titan is offline
Member
 
Join Date: Sep 2018
Posts: 109
little_titan is on a distinguished road
little_titan little_titan is offline
Member
 
Join Date: Sep 2018
Posts: 109
little_titan is on a distinguished road
Just checked my diff breather and its in good working condition, that was a good tip!

Thank you all, you guys are the best. All this info helped out a lot.
little_titan is offline   Reply With QuoteReply With Quote
Old 03-19-2022, 03:11 PM #7
RunnerFanTenn RunnerFanTenn is offline
Junior Member
 
Join Date: Nov 2021
Location: Arkansas
Posts: 6
RunnerFanTenn is on a distinguished road
RunnerFanTenn RunnerFanTenn is offline
Junior Member
 
Join Date: Nov 2021
Location: Arkansas
Posts: 6
RunnerFanTenn is on a distinguished road
I have 3 4runners in family, changed to synthetic after first 25k in all 3 and change differential every 75-100k in all 3. None come off pavement. I think going 100k between changes is fine. All now approaching 300k, all good.
RunnerFanTenn is offline   Reply With QuoteReply With Quote
Old 03-19-2022, 03:18 PM #8
SurferUK's Avatar
SurferUK SurferUK is offline
Member
 
Join Date: Mar 2021
Location: South East UK
Posts: 347
SurferUK will become famous soon enough SurferUK will become famous soon enough
SurferUK SurferUK is offline
Member
SurferUK's Avatar
 
Join Date: Mar 2021
Location: South East UK
Posts: 347
SurferUK will become famous soon enough SurferUK will become famous soon enough
Unknown history on mine so I changed all driveline fluids when I got it at indicated 60,000 miles. Rear diff oil looked a little silvery/cloudy, but I have nothing against which I can compare. (Any pics to compare against welcome)

What I did was use a decent semi-synthetic as a flush for the first year.

I now have some of this ready to change in the summer.

Motorsport CRX 75w90 NT+ - Millers Oils

It's been interesting seeing how long I can leave the good stuff in for.
__________________
2007 4.0 V6 - Jap import in the UK
SurferUK is offline   Reply With QuoteReply With Quote
Old 03-19-2022, 03:58 PM #9
Asylvester Asylvester is offline
Junior Member
 
Join Date: Dec 2021
Location: NH
Posts: 29
Asylvester is on a distinguished road
Asylvester Asylvester is offline
Junior Member
 
Join Date: Dec 2021
Location: NH
Posts: 29
Asylvester is on a distinguished road
I run Amalie Elixir full synthetic gear oil. According to Amalie, it has up to 500,000 mile oil drain intervals capabilities. I once heard a mechanic say the 30k drain interval was overkill. I would agree that would be overkill provided no towing or wheeling. I値l probably just inspect every 30k and only change if it looks dirty. I run this in my Tacoma that has 315k miles and I only charged once and have not had issues.
Attached Images
Full Synthetic Gear Oil change interval-77718298-2d1d-49bc-8999-30a1af233205-jpg 
Asylvester is offline   Reply With QuoteReply With Quote
Old 03-20-2022, 04:29 AM #10
4-Funner 4-Funner is offline
Junior Member
 
Join Date: Sep 2020
Location: 4-States
Posts: 10
4-Funner is on a distinguished road
4-Funner 4-Funner is offline
Junior Member
 
Join Date: Sep 2020
Location: 4-States
Posts: 10
4-Funner is on a distinguished road
Bought my 4th gen at 100k with little to no known history so I changed both diffs & transfer case with valvoline synpower 75w-90 & a cooler hose flush of toyota ATF-SW in the transmission. Now here I am hitting 200K so I'm about to do a repeat. Just waiting now for the weather to break on a day off.

My 4Runner sees very little offroad use. So this interval is fine, BUT waaaay back when when I used to routinely dunk my 85 Toyota 4WD pickup's diffs (and everything up to the headlights on 33" & 3 1/2" lift) underwater I would change them MUCH more often, like after every serious mudding outing and at least once a year. Every time I could see where water had been entering the diffs through the breathers fouling up the fluid right good. Looked like mud and stunk way worse than gear oil already does. I managed to put almost 400k miles on that truck before I gave it up. No way would they have made it for all those years and dunkings like that without failure had I not kept the fluid changed so often.
__________________
2007 Toyota 4Runner Limited V8

Last edited by 4-Funner; 03-20-2022 at 04:34 AM.
4-Funner is offline   Reply With QuoteReply With Quote
Reply

Tags
diff , gear , oil , service , time

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Full Synthetic Gear Oil change interval little_titan Maintenance/Detailing 7 03-15-2022 11:41 AM
synthetic oil change interval v8 moloss 4th Gen T4Rs 10 12-27-2014 05:32 PM
Oil change interval after switch to synthetic? 46runner 4th Gen T4Rs 12 11-07-2014 06:14 PM
synthetic oil change interval bokmeipai Maintenance/Detailing 16 08-16-2011 12:47 PM
Synthetic Gear Oil Change Interval? TeryT Maintenance/Detailing 9 12-30-2008 01:00 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 02:29 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020