User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 07-25-2019, 09:17 AM #1
Captsolo Captsolo is offline
Member
 
Join Date: Sep 2018
Location: Bahamas
Posts: 430
Captsolo will become famous soon enough
Captsolo Captsolo is offline
Member
 
Join Date: Sep 2018
Location: Bahamas
Posts: 430
Captsolo will become famous soon enough
rear differential fluid changed in 2005 4runner (first time)

I usually have my oil serviced at the dealer or an independent shop. I have a 2005 4runner with 150,000 miles.

Today I drained the rear differential for the first time. The oil that came out looked brand new (second look it was black - but had viscosity) - and I'm wondering if one of the shops didn't change it. We found all the receipts, and they told us "no".

Anyway, drain plugs (24mm) came out easy. The dealer had only one metal gasket in stock - so replaced just one.

Filled until it just started to overflow - than put drain plug back in.

Last edited by Captsolo; 08-22-2019 at 07:57 AM.
Captsolo is offline   Reply With QuoteReply With Quote
Old 07-25-2019, 11:46 AM #2
RonJR RonJR is offline
Senior Member
 
Join Date: Dec 2015
Location: Colorado
Posts: 1,181
Real Name: Ron
RonJR has a spectacular aura about RonJR has a spectacular aura about RonJR has a spectacular aura about
RonJR RonJR is offline
Senior Member
 
Join Date: Dec 2015
Location: Colorado
Posts: 1,181
Real Name: Ron
RonJR has a spectacular aura about RonJR has a spectacular aura about RonJR has a spectacular aura about
Not unusual. In the absence of overheating or contamination, gear oil lasts indefinitely. Unlike engine oil, there are no combustion products to contaminate the oil, nor is the gear oil normally subjected to a lot of heat.

Which is not to say you shouldn't change it every 50,000 miles or so - it's cheap insurance to do so. But it's normal for it to look just fine.

I pulled apart the transfer case in my '94 two years ago to make some mods. At 215,000 miles and 23 years of age it looked literally brand new inside. No staining, no sludge in the bottom, nothing. I had changed the oil a couple of times over the years, but I'm just using this as an example that normally, not much goes wrong in a gear box as long as it stays sealed up and isn't abused.
__________________
2006 Sport Edition, V8, 206K miles, 2.5/1.5" OME lift, SPC adjustable UCA's, 255/75/17 BFG KO2's load range C @ 40psi. Regeared diffs to 4.30, with TrueTrac in rear.

1994 SR5, V6, 5-spd, Aussie locker front, Aisin manual hubs, Truetrac rear, 33/10.50/15 BFG KO's, stock suspension, OBA (Viair 400C), Front Range Offroad twin stick, 225K miles. Dual 2.28 transfer cases, for a 90:1 crawl ratio.
RonJR is offline   Reply With QuoteReply With Quote
Old 08-08-2019, 10:21 PM #3
j4run j4run is offline
Member
 
Join Date: Jun 2016
Location: Colorado
Posts: 46
j4run is on a distinguished road
j4run j4run is offline
Member
 
Join Date: Jun 2016
Location: Colorado
Posts: 46
j4run is on a distinguished road
If you have a 4WD, it's worth noting that the front diff holds way less oil than the rear, and the front oil will likely be much dirtier than the rear. The front plug can be very difficult to remove - be sure you can remove the fill plug before draining. Seem many (most?) people never change the diff or transfer case oil, but given the relatively long change intervals it's very inexpensive insurance, and an easy DIY job.
__________________
--o-------o-

2008 4R Limited. Mostly stock and runing great!
j4run is offline   Reply With QuoteReply With Quote
Old 08-11-2019, 04:09 AM #4
pahaf91 pahaf91 is offline
Member
 
Join Date: Apr 2019
Location: Sacramento
Posts: 60
pahaf91 is on a distinguished road
pahaf91 pahaf91 is offline
Member
 
Join Date: Apr 2019
Location: Sacramento
Posts: 60
pahaf91 is on a distinguished road
seems interesting. I did a full service on my 4runner including the front, center, and rear diff fluid. Drove it for 5-7k miles and drained it for special reasons. the fluid came out dirty (almost black) and i can see small metal shavings.

maybe its just my 4runner (2006 v6 4x4 198k)
pahaf91 is offline   Reply With QuoteReply With Quote
Old 08-11-2019, 05:44 AM #5
radlynx radlynx is offline
Registered User
 
Join Date: Jan 2012
Posts: 764
radlynx will become famous soon enough
radlynx radlynx is offline
Registered User
 
Join Date: Jan 2012
Posts: 764
radlynx will become famous soon enough
Quote:
Originally Posted by pahaf91 View Post
seems interesting. I did a full service on my 4runner including the front, center, and rear diff fluid. Drove it for 5-7k miles and drained it for special reasons. the fluid came out dirty (almost black) and i can see small metal shavings.



maybe its just my 4runner (2006 v6 4x4 198k)
Do you off-road it?
radlynx is offline   Reply With QuoteReply With Quote
Old 08-18-2019, 01:53 AM #6
pahaf91 pahaf91 is offline
Member
 
Join Date: Apr 2019
Location: Sacramento
Posts: 60
pahaf91 is on a distinguished road
pahaf91 pahaf91 is offline
Member
 
Join Date: Apr 2019
Location: Sacramento
Posts: 60
pahaf91 is on a distinguished road
Quote:
Originally Posted by radlynx View Post
Do you off-road it?
very much so. Usally at least once a week.
pahaf91 is offline   Reply With QuoteReply With Quote
Old 08-18-2019, 11:49 AM #7
firebirdguy firebirdguy is offline
Member
 
Join Date: Sep 2018
Location: iowa
Posts: 905
firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light
firebirdguy firebirdguy is offline
Member
 
Join Date: Sep 2018
Location: iowa
Posts: 905
firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light
Quote:
Originally Posted by RonJR View Post
Not unusual. In the absence of overheating or contamination, gear oil lasts indefinitely. Unlike engine oil, there are no combustion products to contaminate the oil, nor is the gear oil normally subjected to a lot of heat.
just wanted to clarify some of this... gear oils do not last indefinitely, the additives break down & wear out as well as the oil itself is subjject to extreme pressures & whats called shearing occurs due to this. plus a rear diff gets very warm from just normal driving, when towing the rear can get very warm to almost hot. so while there are no combustion byproducts in gear oil, there is wear & break down that limits the life of the oil & why manufacturers have a change interval for them.
firebirdguy is offline   Reply With QuoteReply With Quote
Old 08-21-2019, 02:51 PM #8
bob3dsf's Avatar
bob3dsf bob3dsf is offline
Member
 
Join Date: Nov 2011
Location: Rocky Mount, NC
Age: 49
Posts: 472
Real Name: Bob
bob3dsf will become famous soon enough
bob3dsf bob3dsf is offline
Member
bob3dsf's Avatar
 
Join Date: Nov 2011
Location: Rocky Mount, NC
Age: 49
Posts: 472
Real Name: Bob
bob3dsf will become famous soon enough
Quote:
Originally Posted by firebirdguy View Post
just wanted to clarify some of this... gear oils do not last indefinitely, the additives break down & wear out as well as the oil itself is subjject to extreme pressures & whats called shearing occurs due to this. plus a rear diff gets very warm from just normal driving, when towing the rear can get very warm to almost hot. so while there are no combustion byproducts in gear oil, there is wear & break down that limits the life of the oil & why manufacturers have a change interval for them.
True. If a fair amount of heat wasn't involved, then diffs wouldn't have vent valves. Further, I found a video on Youtube showing what gear oil looks like inside the diff while driving. There was a transparent diff cover. The gear oil gets aerated to the point that it looked like a chocolate milkshake.
__________________
2008 SR5 4WD (@280k!!)
bob3dsf is offline   Reply With QuoteReply With Quote
Old 08-23-2019, 01:07 PM #9
firebirdguy firebirdguy is offline
Member
 
Join Date: Sep 2018
Location: iowa
Posts: 905
firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light
firebirdguy firebirdguy is offline
Member
 
Join Date: Sep 2018
Location: iowa
Posts: 905
firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light firebirdguy is a glorious beacon of light
Quote:
Originally Posted by bob3dsf View Post
True. If a fair amount of heat wasn't involved, then diffs wouldn't have vent valves. Further, I found a video on Youtube showing what gear oil looks like inside the diff while driving. There was a transparent diff cover. The gear oil gets aerated to the point that it looked like a chocolate milkshake.
yeah ive seen that vid before. gear oil goes through some pretty extreme abuse, especiallly when towing or high horsepower race cars etc.

just wanted to post accurate info that gear oil absolutely does not last indefinitely. with or without heat.
firebirdguy is offline   Reply With QuoteReply With Quote
Old 08-23-2019, 04:06 PM #10
62caster 62caster is offline
Junior Member
 
Join Date: Jan 2019
Location: Nashville
Posts: 5
62caster is on a distinguished road
62caster 62caster is offline
Junior Member
 
Join Date: Jan 2019
Location: Nashville
Posts: 5
62caster is on a distinguished road
Rear diff is a fun and easy job to DIY. Good job on the OP. Keep up with it every 50k.
62caster is offline   Reply With QuoteReply With Quote
Reply

Tags
dealer , differential , oil , rear , 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
Changed rear diff fluid and greased drive line, now trans runs hot Skunkworks 3rd gen T4Rs 11 06-20-2019 04:20 PM
Rear differential fluid. kman55 3rd gen T4Rs 60 10-14-2018 07:15 AM
Rear Differential Fluid, 75W-90 Okay for 2WD? jdotlim 4th Gen T4Rs 10 05-07-2016 01:50 PM
Front/rear differential fluid, trans fluid and transfer case fluid change 88 Kel Varnsen Classic T4Rs 1 05-20-2012 03:26 AM
Brake fluid, transmission fluid, and rear differential fluid NViejeP 4th Gen T4Rs 12 03-31-2007 03:43 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 08:55 PM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 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