10w-30 motor oil in 5 speed (update) - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Like Tree40Likes
Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 03-07-2019, 06:09 PM
Thread Starter
  #1
Jeeper
 
RichnSteph's Avatar
 
Join Date: Apr 2018
Location: San Marcos, Texas
Posts: 284
10w-30 motor oil in 5 speed (update)

In another thread I'd mentioned some whine in 3rd-5th. From advice here I drained what turned out to be some nasty gear oil out of the transmission and replaced it with 10w-30 motor oil. The whine is now gone from 5th and is greatly diminished in 3rd and 4th after only about 30 miles of driving. My guess is that it'll be silent again here in a few more miles. A couple things of note are that it shifts MUCH easier and smoother than it has since I've owned it. I also felt the tranny when I got home today and it's cooler than it was yesterday when I changed out the old fluid.

So far so good!

RichnSteph

__________________
91 Renegade, 4.0, 5 speed, 68,000 miles at buy in, 75,000 so far and counting. 2.5" spring and 31's are the only upgrades.
RichnSteph is offline   Quote
Old 03-07-2019, 06:17 PM   #2
Los Angeles

5-Year WF Supporting Member
 
JonStevens's Avatar
 
Join Date: Oct 2018
Posts: 989
You are on fire, man! Good to hear things are improving.
RichnSteph likes this.

__________________
1993 Wrangler YJ MPFI 4.0 HO m/t 5 spd
JonStevens is offline   Quote
Old 03-07-2019, 08:33 PM   #3
Jeeper
 
vmxwinn's Avatar
 
Join Date: May 2018
Location: Danville CA
Posts: 627
Good deal. I would change it again after a few thousand miles. And now change all the other fluids down to even the power steering.
RichnSteph likes this.
__________________
94 YJ 4.0L 5spd - Ford 8.8 - Detroit Truetrac - 4:10ís, 33Ēs - SYE - NP 231 w/272:1 - RE Extreme 4.5Ē - RC N2.0 shocks for now - Smitty Built XRC bumpers Front & Rear - XRC Winch - Hella H4 E Codes - 136amp Alternator - 95 DD Brake Booster & MC - CV Front Drive Shaft
vmxwinn is offline   Quote
Sponsored Links
Advertisement
 
Old 03-07-2019, 09:22 PM   #4
Jeeper
 
Join Date: Jan 2019
Location: Mountains of Pacific Northwest
Posts: 47
Personally I would never run motor oil in a gear box. Motor oil is formulated for shear resistance, think about how a crank journal spins in its bearing. Gear oil is formulated for compression resistance, think the teeth of two gear meshing together. Run gear oil in a gear box.
PNW Guy is offline   Quote
Old 03-07-2019, 09:54 PM   #5
Los Angeles

5-Year WF Supporting Member
 
JonStevens's Avatar
 
Join Date: Oct 2018
Posts: 989
Hey man,
I don’t want to get into another “10w-30 in the transmission” thread debate, but I would get rid of the 10w-30, lol.
I ran 10w-30 for 3 months, because I bought into it. It ran better than the sludge that came out, so I just thought my transmission had miles on it.
I recently switched to Redline MT-90 and it is finally shifting like it normally should.
The guys that are using 10w-30 have never used Redline, or they wouldn’t be using 10w-30.
__________________
1993 Wrangler YJ MPFI 4.0 HO m/t 5 spd
JonStevens is offline   Quote
Old 03-07-2019, 11:01 PM
Thread Starter
  #6
Jeeper
 
RichnSteph's Avatar
 
Join Date: Apr 2018
Location: San Marcos, Texas
Posts: 284
Yeah I read dozens of threads about this. Haters on both sides of it. One thing they almost all agree on is the GL5 gear oil has no place in out transmissions. I am going to change out the gear oil in the rear end this weekend though, then the transfer case a few days later, then a complete brake system flush, same with the clutch. At some point I'll get the front axle working (pretty sure I know what it is) and then change the gear oil in that one also. I'm trying to get this thing on a regular maintenance schedule. At least then I'll know what's been changed and what's due when. Damn thing is an almost instant labor of love for sure. What I do not want to do is change all of them at once and then have a problem develop and not know if it was the last thing I "fixed" or one of the four or five I "fixed" over a Saturday. Just in case ya'll missed the signature this little 1991 Jeep just got to it's 75,000 mile maintenance check point a few days ago. Surprising that a vehicle with so few miles and so many years can have SO MANY issues.



RichnSteph
__________________
91 Renegade, 4.0, 5 speed, 68,000 miles at buy in, 75,000 so far and counting. 2.5" spring and 31's are the only upgrades.
RichnSteph is offline   Quote
Old 03-07-2019, 11:13 PM   #7
Los Angeles

5-Year WF Supporting Member
 
JonStevens's Avatar
 
Join Date: Oct 2018
Posts: 989
Yeah, I have done the same, engine, trans, rear end and clutch. I have to do the front and tc.
I am not looking forward to changing my skid plate, but hyped about rebuilding the front end.

75,000 miles and you have literally ran into every single problem ever posted! Lol, that sucks.
RichnSteph likes this.
__________________
1993 Wrangler YJ MPFI 4.0 HO m/t 5 spd
JonStevens is offline   Quote
Old 03-08-2019, 08:09 AM
Thread Starter
  #8
Jeeper
 
RichnSteph's Avatar
 
Join Date: Apr 2018
Location: San Marcos, Texas
Posts: 284
Quote:
Originally Posted by JonStevens View Post
Yeah, I have done the same, engine, trans, rear end and clutch. I have to do the front and tc.
I am not looking forward to changing my skid plate, but hyped about rebuilding the front end.

75,000 miles and you have literally ran into every single problem ever posted! Lol, that sucks.
Man I'm with you on changing the skid plate. Mine has holes rusted in it and it will be replaced this year. Probably when I do my lift as I'm putting in a t-case drop that comes with the kit. I figure after about 5 years and $10,000 more I'll have an almost-done-enough-that-I-can-stop-tinkering/repairing Jeep.


RichnSteph
__________________
91 Renegade, 4.0, 5 speed, 68,000 miles at buy in, 75,000 so far and counting. 2.5" spring and 31's are the only upgrades.
RichnSteph is offline   Quote
Old 03-08-2019, 10:54 AM   #9
Jeeper
 
svtrit's Avatar
 
Join Date: Feb 2018
Posts: 126
I changed to 10w-30 and my transmission smoothed out instantly. Iíll eventually switch to Redline based on what I am reading here, but my Jeep is a toy, and a pavement pounder, so Iím not too worried about the 10w-30.


Sent from my iPad using Tapatalk
svtrit is offline   Quote
Old 03-08-2019, 09:19 PM   #10
Jeeper
 
Gottagofast's Avatar
 
Join Date: May 2017
Posts: 8,390
I've been running 10 30 for 100,000 miles and almost 10 years.... love it
pc1p, maxtor and ryker like this.
__________________
I come in peace.... I mean you no harm
Currently in the stable: ... 97 tj 4.0 5 speed stock....04 tj 4.0 auto 4" and 33's... 98 tj roller for future build... 94 yj sahara 4.5" RE and 33's... 92 yj sbc 3/4 ton axles and 38's... Cj5,7,yj,xj,ex mud dragster project

TJ dash speakers that actually rock! Kicker sub and amp in center console
Gottagofast is online now   Quote
Old 03-09-2019, 12:25 AM   #11
Los Angeles

5-Year WF Supporting Member
 
JonStevens's Avatar
 
Join Date: Oct 2018
Posts: 989
Quote:
Originally Posted by Gottagofast View Post
I've been running 10 30 for 100,000 miles and almost 10 years.... love it
10 years?!
It only took me 1 month to figure out 10w-30 was crap and 2 months to do something about it.

I donít have to shift into 3rd, rev it, then shift into first anymore it just slides where it needs to go the first time.
I guess pride really IS a hard pill to swallow.

Thumbs up to you though, happy jeepiní.
__________________
1993 Wrangler YJ MPFI 4.0 HO m/t 5 spd
JonStevens is offline   Quote
Old 03-09-2019, 07:13 AM   #12
Jeeper
 
Gottagofast's Avatar
 
Join Date: May 2017
Posts: 8,390
You have driven my jeep HOW MANY TIMES??????? Ah yes.... NONE.......
My yj shifts smother than my bmw.... and WAY smoother than my ford truck.... it shifts absolutely butter smooth.... it's not pride it's just that it works REALLY well.....
pc1p and maxtor like this.
__________________
I come in peace.... I mean you no harm
Currently in the stable: ... 97 tj 4.0 5 speed stock....04 tj 4.0 auto 4" and 33's... 98 tj roller for future build... 94 yj sahara 4.5" RE and 33's... 92 yj sbc 3/4 ton axles and 38's... Cj5,7,yj,xj,ex mud dragster project

TJ dash speakers that actually rock! Kicker sub and amp in center console
Gottagofast is online now   Quote
Old 03-09-2019, 07:24 AM   #13
Moderator

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
Join Date: May 2011
Posts: 7,430
As mentioned, I would run it for about 1,000 miles and change it again. That should get most of the residual gear oil out of the unit.
RichnSteph likes this.
__________________
1988 E-150 4.9L 5 Speed Stick
2008 Jeep Liberty Auto Trans
2016 JK Rubicon Hard Rock Auto Trans

God Bless Our Troops
demarpaint is offline   Quote
Old 03-09-2019, 07:46 AM   #14
Jeeper
 
Join Date: May 2010
Location: Lansing,Mi
Posts: 639
I also noticed much better shifting after switching from motor oil to a GL4 lube.
https://www.amsoil.com/shop/by-produ...-90/?zo=226468
wheels082 is offline   Quote
Old 03-09-2019, 10:16 AM
Thread Starter
  #15
Jeeper
 
RichnSteph's Avatar
 
Join Date: Apr 2018
Location: San Marcos, Texas
Posts: 284
Quote:
Originally Posted by JonStevens View Post
10 years?!
It only took me 1 month to figure out 10w-30 was crap and 2 months to do something about it.

I donít have to shift into 3rd, rev it, then shift into first anymore it just slides where it needs to go the first time.
I might be confused here. Are you saying that you used to have to put your it in 3rd and rev it just to be able to get it to go into first gear?? I'm guessing from a stop correct? Man that sounds like there was something wrong going on in there for a bit. I've never had that problem so ya got one up on me.

RichnSteph
pc1p and maxtor like this.
__________________
91 Renegade, 4.0, 5 speed, 68,000 miles at buy in, 75,000 so far and counting. 2.5" spring and 31's are the only upgrades.
RichnSteph is offline   Quote
Old 03-09-2019, 10:18 AM
Thread Starter
  #16
Jeeper
 
RichnSteph's Avatar
 
Join Date: Apr 2018
Location: San Marcos, Texas
Posts: 284
Quote:
Originally Posted by demarpaint View Post
As mentioned, I would run it for about 1,000 miles and change it again. That should get most of the residual gear oil out of the unit.
For sure. I've got an oil change coming up in 500 miles or so and will change it out at the same time since I'll be under there anyway. Might go back with the same synthetic motor oil that I'm putting in the engine.

RichnSteph
demarpaint likes this.
__________________
91 Renegade, 4.0, 5 speed, 68,000 miles at buy in, 75,000 so far and counting. 2.5" spring and 31's are the only upgrades.
RichnSteph is offline   Quote
Old 03-09-2019, 10:33 AM   #17
Supporting Member

5-Year WF Supporting Member
 
Got it at last's Avatar
 
Join Date: Nov 2016
Location: Phoenix, Az
Posts: 2,099
Quote:
Originally Posted by RichnSteph View Post
For sure. I've got an oil change coming up in 500 miles or so and will change it out at the same time since I'll be under there anyway. Might go back with the same synthetic motor oil that I'm putting in the engine.

RichnSteph
Better Google that specific brand first for yellow metal safety..
__________________
'89 YJ 4.2 with MC-2150 Carb & HEI, 2-1/2" Magnaflow Ex. AX-15, NP231, Adams front shaft, SYE, 31x10.5x15 BFG KO's, 2 1/2" RE Springs, 1" BL. RS5000x, Hella H-4's, XRC 9500 Winch
'88 Sahara, 4.2, Weber 38, HEI, BA-10, np231, Hardtop, 31x10.5x15 Cepek FC's.
'06 WK, '05 WK,

FSM Manuals https://www.dropbox.com/sh/0vfmk6jc5...v7lceZk7a?dl=0
Got it at last is offline   Quote
Old 03-09-2019, 12:03 PM   #18
Supporting Member

5-Year WF Supporting Member
 
Got it at last's Avatar
 
Join Date: Nov 2016
Location: Phoenix, Az
Posts: 2,099
Never mind, can't find any that do...
__________________
'89 YJ 4.2 with MC-2150 Carb & HEI, 2-1/2" Magnaflow Ex. AX-15, NP231, Adams front shaft, SYE, 31x10.5x15 BFG KO's, 2 1/2" RE Springs, 1" BL. RS5000x, Hella H-4's, XRC 9500 Winch
'88 Sahara, 4.2, Weber 38, HEI, BA-10, np231, Hardtop, 31x10.5x15 Cepek FC's.
'06 WK, '05 WK,

FSM Manuals https://www.dropbox.com/sh/0vfmk6jc5...v7lceZk7a?dl=0
Got it at last is offline   Quote
Old 03-09-2019, 12:25 PM
Thread Starter
  #19
Jeeper
 
RichnSteph's Avatar
 
Join Date: Apr 2018
Location: San Marcos, Texas
Posts: 284
Quote:
Originally Posted by Got it at last View Post
Never mind, can't find any that do...
I sent an email asking if the oil would damage brass syncros.


RichnSteph
Got it at last likes this.
__________________
91 Renegade, 4.0, 5 speed, 68,000 miles at buy in, 75,000 so far and counting. 2.5" spring and 31's are the only upgrades.
RichnSteph is offline   Quote
Old 03-09-2019, 02:46 PM   #20
Moderator

WF Lifetime Member
WF Supporting Member
::WF Moderator::
 
Luckymac's Avatar
 
Join Date: Jan 2014
Location: SouthEast of Denver
Posts: 9,504
Quote:
Originally Posted by RichnSteph View Post
Yeah I read dozens of threads about this. Haters on both sides of it. One thing they almost all agree on is the GL5 gear oil has no place in out transmissions.
RichnSteph
Based on info from this forum, when I dumped what was in my transmission, I installed 10W-30 motor oil.
It helped my first to second gear shifts. Then I added a pint of STP and it helped a little bit more.
If I change the trans fluid again (before I swap in an AX15), I'll try the Redline or one of the other high-rent (yellow metals safe) gear oils just to see what happens.

Good Luck, L.M.
__________________
"Wrangler....It's not just a vehicle, It's a lifestyle".
.................................................. ........................
1987 YJ-4.2L-Standard Shift- Re-manufactured Carter Carb-2" body Lift-31X10.5X15 BFG KOs-190K Miles No back seat.
HEI distributor with computer and all related relays and wiring removed.
12K Badlands winch with dual batteries.
Warn front bumper. Matching imitation Warn bumper on the rear.
Luckymac is offline   Quote
Old 03-09-2019, 03:11 PM   #21
Jeeper
 
283 YJ's Avatar
 
Join Date: Aug 2017
Location: Central Oregon
Posts: 416
Just my experience, so take this for what it's worth. I have used Redline in two Harleys, including their high end transmission fluid. After oil analysis, I WILL NEVER USE ANOTHER REDLINE PRODUCT.
The transmission oil came back with test results showing water saturation with a viscosity rating of 250. When I spoke with Redling to ascertain why this would happen, their response was that their oils "act" like a 250 weight. HUH? Emulsification (retention of water) can only occur when the base stock is made with what's called an open ended molecule allowing water to saturate.

But what really confuses me, is why folks keep going to engine oil without searching for a true drive train fluid, made specifically for this purpose.

Then again, to each his own.
__________________
If I ever ask you if you want me to be honest with you, say no.
283 YJ is offline   Quote
Old 03-09-2019, 04:13 PM
Thread Starter
  #22
Jeeper
 
RichnSteph's Avatar
 
Join Date: Apr 2018
Location: San Marcos, Texas
Posts: 284
Quick update for you all. The whine is now 100% gone in 4th and 5th, 3rd is there but you have to listen for it. Shifting is stupidly smooth.

RichnSteph
__________________
91 Renegade, 4.0, 5 speed, 68,000 miles at buy in, 75,000 so far and counting. 2.5" spring and 31's are the only upgrades.
RichnSteph is offline   Quote
Old 03-09-2019, 05:45 PM   #23
Supporting Member

5-Year WF Supporting Member
 
Got it at last's Avatar
 
Join Date: Nov 2016
Location: Phoenix, Az
Posts: 2,099
One more flush and might even get third gear too. AWESOME!
__________________
'89 YJ 4.2 with MC-2150 Carb & HEI, 2-1/2" Magnaflow Ex. AX-15, NP231, Adams front shaft, SYE, 31x10.5x15 BFG KO's, 2 1/2" RE Springs, 1" BL. RS5000x, Hella H-4's, XRC 9500 Winch
'88 Sahara, 4.2, Weber 38, HEI, BA-10, np231, Hardtop, 31x10.5x15 Cepek FC's.
'06 WK, '05 WK,

FSM Manuals https://www.dropbox.com/sh/0vfmk6jc5...v7lceZk7a?dl=0
Got it at last is offline   Quote
Old 03-10-2019, 12:46 AM   #24
Jeeper
 
brentnclemson's Avatar
 
Join Date: Oct 2017
Location: Seattle, WA
Posts: 328
Quote:
Originally Posted by JonStevens View Post
Hey man,
I donít want to get into another ď10w-30 in the transmissionĒ thread debate, but I would get rid of the 10w-30, lol.
I ran 10w-30 for 3 months, because I bought into it. It ran better than the sludge that came out, so I just thought my transmission had miles on it.
I recently switched to Redline MT-90 and it is finally shifting like it normally should.
The guys that are using 10w-30 have never used Redline, or they wouldnít be using 10w-30.


I switched from MT-90 to 10W30, mostly because it was 10% of the cost and I didnít have to order it online.

The two fluids feel exactly the same on an AX-15 with 200k. Thatís to say...slightly notchy for the first few miles and perfectly normal after that.


Sent from my iPhone using Tapatalk Pro
brentnclemson is offline   Quote
Old 03-10-2019, 11:12 AM
Thread Starter
  #25
Jeeper
 
RichnSteph's Avatar
 
Join Date: Apr 2018
Location: San Marcos, Texas
Posts: 284
Quote:
Originally Posted by 283 YJ View Post

But what really confuses me, is why folks keep going to engine oil without searching for a true drive train fluid, made specifically for this purpose.

Then again, to each his own.
I looked, and looked, and looked. Everything I read pointed towards 10w-30 motor oil as the best fluid to put in there. If you know of a better fluid then please let me know. What confused me was that the owners manual suggested a fluid that would eat the brass out of the transmission. For what it's worth after changing to motor oil my transmission shifts wonderfully. It's like having a whole new gear box under the stick.

RichnSteph
__________________
91 Renegade, 4.0, 5 speed, 68,000 miles at buy in, 75,000 so far and counting. 2.5" spring and 31's are the only upgrades.
RichnSteph is offline   Quote
Old 03-12-2019, 09:17 PM   #26
Jeeper
 
Join Date: Aug 2011
Posts: 24
Used 10-30...had to rebuild tranny...bearings burned up.
Maybe synthetic would have been better.
stik is offline   Quote
Old 03-13-2019, 09:03 AM   #27
Jeeper
 
svtrit's Avatar
 
Join Date: Feb 2018
Posts: 126
Quote:
Originally Posted by stik View Post
Used 10-30...had to rebuild tranny...bearings burned up.
Maybe synthetic would have been better.


I used Shell Rotella in mine, thinking that the Synthetic oil was the best idea. All I read recommended using Synthetic 10w-30. For as little as I drive, Iím not worried.


Sent from my iPad using Tapatalk
svtrit is offline   Quote
Old 03-13-2019, 11:13 AM   #28
Jeeper
 
Join Date: Apr 2017
Location: VTA
Posts: 343
Quote:
Originally Posted by stik View Post
Used 10-30...had to rebuild tranny...bearings burned up.
Maybe synthetic would have been better.
Flat tow much?
__________________
1988 YJ Sahara 4.2L 5spd,8.8/D30 w/4.10s, 33/10.5/15KO2s, TONS of tunes,Warn 5k winch, Body Armor rear bumper/tire rack. Spicer SYE, Procomp 4" lift kit,
Sahara805 is offline   Quote
Old 03-13-2019, 06:00 PM   #29
Newb
 
Join Date: Jun 2018
Location: Apache Junction, AZ
Posts: 12
manufacturer recommendation?

I know this is probably crazy talk around here but how about using what it was designed for? I used to work on Cat tractors and Cat said to use 30W in axles and trans. that doesn't mean you should use it in everything. I'm running an old 4 sp Saginaw in my 2A. Going to use the best quality 90W gear oil I can find because that's what GM recommended for that trans back in the 70's.
azvinnie is offline   Quote
Old 03-13-2019, 07:51 PM   #30
jkp
Jeeper
 
Join Date: Mar 2010
Location: Warner Robins, GA
Posts: 1,025
10W-30 synthetic is what Aisin and MOPAR recommend now.

About the only GL-4 gear oil you will find is Redline MTL or MT-90 or possibly Amsoil.
Sonny S and ryker like this.

__________________
'92 Islander
'06 Rubicon
jkp is offline   Quote
Reply

Thread Tools

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
My Jeep JK is revving, but not gaining speed. Sharks51 JK Tech Forum 20 09-26-2018 05:39 AM
How hot is too hot (3.6L) sportcoupe JK General Discussion Forum 206 06-28-2018 08:32 AM
Blower Speed Not Working On 3rd Speed shanejo95 TJ Tech Forum 3 04-01-2017 04:30 PM
Speed bumps Socaljk JK Tech Forum 15 06-06-2016 10:30 PM
I know we aren't exactly speed demons but... watch out Chicagoans Lusus_Naturae Off-Topic 4 10-15-2013 11:18 AM





All times are GMT -5. The time now is 01:32 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.1
User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

Jeepģ, Wrangler, Liberty, Wagoneer, Cherokee, Gladiator, Mopar and Grand Cherokee are copyrighted and trademarked to FCA US LLC.
Wranglerforum.com is not in any way associated with FCA US LLC.