Gear Change - Front Pumpkin Question - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 02-21-2012, 05:17 AM   #1
Jeeper
 
baytownbert's Avatar
 
Join Date: Apr 2011
Posts: 468
Arrow Gear Change - Front Pumpkin Question

I understand after my upcoming gear change I will have to change the gear oil after a short amount of time, but what about the front pumpkin (Installing a Detroit TrueTrac in the front at same time)?

1. Do I have to track how many miles I am in 4X4 before I change the front?

2. Amsoil or other synthetic over Dino fossil oils?

3. I'm sure the gear guy will give me instructions, but what is the normal duration for break-in of new gears?

baytownbert is offline   Quote Quick Reply
Old 02-21-2012, 06:09 AM   #2
Supporting Member

WF Supporting Member
 
SilverSport's Avatar
 
Join Date: May 2011
Posts: 21,191
Send a message via Yahoo to SilverSport
1) No need to track miles in 4X4 for the front.
2) Use a synthetic.
3) Normal break-in period for gears is 500 miles.

__________________
"Own a Jeep and own a piece of history."

"The Hunter is not concerned with the opinion of the Wolf."
SilverSport is offline   Quote Quick Reply
Old 02-21-2012, 06:55 AM   #3
The Bad Guy

WF Supporting Member
 
daggo66's Avatar
 
Join Date: May 2009
Location: NJ exile living in Baltimore
Posts: 22,199
Unless you also added manual locking hubs, your front differential will need service at the same time as your rear.
__________________
Tom

"I've got two things in this world, my balls and my word and I don't break them for no one."
daggo66 is offline   Quote Quick Reply
Old 02-21-2012, 08:00 AM   #4
Jeeper
 
baytownbert's Avatar
 
Join Date: Apr 2011
Posts: 468
Okay. I front gears are still meshing, but not under a load, so they will wear the same.
baytownbert is offline   Quote Quick Reply
Old 02-21-2012, 08:06 AM   #5
Jeeper
 
grouchytim's Avatar
 
Join Date: Jun 2011
Location: Chesapeake, VA
Posts: 48
Load or not they are dragging the drive shaft with them and so they are under a light load. 500 miles change the oil in both pumpkins and inspect the gears for proper wear. Check the oil for large grit. You may be a little grit and that is ok but shards of metal is bad. I normally say use conventional for break in cus it's cheap and promotes the wear of the gears and accellerates the break in. Then fill with synthetic for post break in. With synthetic during break in, I normally go 500 then 1000 to make sure everything this still good.
grouchytim is offline   Quote Quick Reply
Old 02-21-2012, 09:24 PM   #6
Jeeper
 
Join Date: Nov 2010
Location: Carlsbad, CA
Posts: 138
The front axle is turning all the time just like the rear and the gear oil should be changed after 500 break-in miles. DO NOT use synthetic oil with the Truetrac! Use only regular 80W90 oil.
__________________



river2c is offline   Quote Quick Reply
Old 02-22-2012, 04:48 AM   #7
Jeeper
 
baytownbert's Avatar
 
Join Date: Apr 2011
Posts: 468
After perusing the dino oil -vs-Syn oil numerous remarks on numerous forums, I have decided to go with dino oil in both diffs. Thanks! I'll add the slip modifier to my Traclok.


Quote:
Originally Posted by river2c View Post
The front axle is turning all the time just like the rear and the gear oil should be changed after 500 break-in miles. DO NOT use synthetic oil with the Truetrac! Use only regular 80W90 oil.
baytownbert is offline   Quote Quick Reply
Old 02-22-2012, 08:53 AM   #8
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
If you use YUKON gears-use synthetic

Their warrany is best applied using top synthetic oil !

JIMBO
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 02-22-2012, 10:02 AM   #9
Supporting Member

WF Supporting Member
 
SilverSport's Avatar
 
Join Date: May 2011
Posts: 21,191
Send a message via Yahoo to SilverSport
Eaton also provides conflicting info. They say to use dino oil with the TrueTrac and yet on the same website, they also recommend using whatever gear lube the differential manufacturer says is ok. Some diffs come factory filled with synthetic. No clear answer especially given the fact the Truetrac is all gears with no clutch plates. Personally I would run synthetic and not look back.
__________________
"Own a Jeep and own a piece of history."

"The Hunter is not concerned with the opinion of the Wolf."
SilverSport is offline   Quote Quick Reply
Old 02-22-2012, 10:53 AM   #10
Jeeper
 
Join Date: May 2010
Location: Lansing,Mi
Posts: 158
I would put dino oil in when doing the gear change. After the break in of 500 miles or whatever milage you decide, I would switch to Amsoil synthetic.
wheels082 is offline   Quote Quick Reply
Old 02-22-2012, 10:55 AM   #11
Jeeper
 
baytownbert's Avatar
 
Join Date: Apr 2011
Posts: 468
I am going to use Nitro gears. 4 quarts of Amsoil shipped to my house is danged expensive oil.
baytownbert is offline   Quote Quick Reply
Old 02-22-2012, 11:08 AM   #12
Jeeper
 
Join Date: May 2010
Location: Lansing,Mi
Posts: 158
The front diff only holds about 1.1-1.5 quarts.
wheels082 is offline   Quote Quick Reply
Old 02-22-2012, 11:12 AM   #13
Jeeper
 
baytownbert's Avatar
 
Join Date: Apr 2011
Posts: 468
I'm doing both front and back.

From Eaton's site:

Truetrac

What kind of oil should I use? Can I use synthetic? Do I need friction additive/modifier?
A quality petroleum/mineral based oil works best in the Truetrac units. We do not recommend synthetic oil. Friction additive/modifier is not required.



Quote:
Originally Posted by wheels082 View Post
The front diff only holds about 1.1-1.5 quarts.
baytownbert is offline   Quote Quick Reply
Old 02-22-2012, 11:33 AM   #14
Jeeper
 
joe002's Avatar
 
Join Date: Nov 2010
Location: Phoenix, AZ
Posts: 1,185
Quote:
Originally Posted by baytownbert View Post
After perusing the dino oil -vs-Syn oil numerous remarks on numerous forums, I have decided to go with dino oil in both diffs. Thanks! I'll add the slip modifier to my Traclok.
If you’re going with Dino then get Valvoline Dino (75W-90 or 80W-90). Check the bottle, but it should be GL-5, MT-1 and SAE J2360. A lot of synthetic oils don't meet all of those specs.
__________________
2008 Rubicon, 2 Door, Flame Red, Auto, MyGIG, Power Group, Deep Tint
AEV Pintlers, BFG KM2s 35x12.50x17, Bulldog Fab Rear Stubby Bump, Currie F/R Adj Trac Bars, Daystar Upper Dash, FireStik FireFly Antenna, Kilby Rear Shock Skids, LoD Sig Stubby Front Bump, Midland 75-822 CB, Mopar Filler Door & Locking Gas Cap, Rancho LCA Skid, Rancho Oil Pan Armor, Riddler Diff Covers, TeraFlex 2.5" Spring Lift, Warn PowerPlant HD, Woods Evap Can Relo, Woods SS Relo, Yukon 5.38s
joe002 is offline   Quote Quick Reply
Old 02-22-2012, 11:40 AM   #15
Jeeper
 
baytownbert's Avatar
 
Join Date: Apr 2011
Posts: 468
Thanks Joe. Will do.
baytownbert is offline   Quote Quick Reply
Old 02-22-2012, 11:42 AM   #16
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
Valvoline syn 75w-90/75w-140----does-

JIMBO
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 02-22-2012, 11:49 AM   #17
Jeeper
 
joe002's Avatar
 
Join Date: Nov 2010
Location: Phoenix, AZ
Posts: 1,185
Quote:
Originally Posted by JIMBOX View Post
Valvoline syn 75w-90/75w-140----does-

JIMBO
Actually Jim, the synthetic 75W-90 does meet all of them but last time I checked the 75W-140 doesn’t meet all of them yet. I called Valvoline and talked to a tech and asked why and he didn't know... For some reason the dino and blended 85W-140 do meet all of the specs. I really don’t know why the synthetic 75W140 doesn’t - maybe they just have to finish testing it???
__________________
2008 Rubicon, 2 Door, Flame Red, Auto, MyGIG, Power Group, Deep Tint
AEV Pintlers, BFG KM2s 35x12.50x17, Bulldog Fab Rear Stubby Bump, Currie F/R Adj Trac Bars, Daystar Upper Dash, FireStik FireFly Antenna, Kilby Rear Shock Skids, LoD Sig Stubby Front Bump, Midland 75-822 CB, Mopar Filler Door & Locking Gas Cap, Rancho LCA Skid, Rancho Oil Pan Armor, Riddler Diff Covers, TeraFlex 2.5" Spring Lift, Warn PowerPlant HD, Woods Evap Can Relo, Woods SS Relo, Yukon 5.38s
joe002 is offline   Quote Quick Reply
Old 02-22-2012, 12:00 PM   #18
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
I don't know what standards you want to follow, but


Quote:
Originally Posted by joe002 View Post
Actually Jim, the synthetic 75W-90 does meet all of them but last time I checked the 75W-140 doesn’t meet all of them yet. I called Valvoline and talked to a tech and asked why and he didn't know... For some reason the dino and blended 85W-140 do meet all of the specs. I really don’t know why the synthetic 75W140 doesn’t - maybe they just have to finish testing it???
My Valvoline 75w-140 meets--Chrysler MS-8985/API-GL-5 and is full synthetic-now

If you're gonna require more lab data for your jeep differentials---haveatit-

--JIMBO
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 02-22-2012, 12:36 PM   #19
Jeeper
 
joe002's Avatar
 
Join Date: Nov 2010
Location: Phoenix, AZ
Posts: 1,185
Quote:
Originally Posted by JIMBOX View Post
I don't know what standards you want to follow, but




My Valvoline 75w-140 meets--Chrysler MS-8985/API-GL-5 and is full synthetic-now

If you're gonna require more lab data for your jeep differentials---haveatit-

--JIMBO
Yeah, all that's required is the Chrysler and GL-5 standards. You don't have to get the higher standards or synthetic - though I would follow what your gear guys recommend as they are going to be the ones to honor your warrantee.
__________________
2008 Rubicon, 2 Door, Flame Red, Auto, MyGIG, Power Group, Deep Tint
AEV Pintlers, BFG KM2s 35x12.50x17, Bulldog Fab Rear Stubby Bump, Currie F/R Adj Trac Bars, Daystar Upper Dash, FireStik FireFly Antenna, Kilby Rear Shock Skids, LoD Sig Stubby Front Bump, Midland 75-822 CB, Mopar Filler Door & Locking Gas Cap, Rancho LCA Skid, Rancho Oil Pan Armor, Riddler Diff Covers, TeraFlex 2.5" Spring Lift, Warn PowerPlant HD, Woods Evap Can Relo, Woods SS Relo, Yukon 5.38s
joe002 is offline   Quote Quick Reply
Old 02-22-2012, 12:44 PM   #20
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
These guys have done a lotta off-road racing/maintenance and they made it very positive and mandatory that I use Valvoline 75w-90/75w-140 after the 500 miles and FOREVER--


Quote:
Originally Posted by joe002 View Post
Yeah, all that's required is the Chrysler and GL-5 standards. You don't have to get the higher standards or synthetic - though I would follow what your gear guys recommend as they are going to be the ones to honor your warrantee.
Otherwise--NO warranty with YUKON gears--ya gotta do what ya gotta do !

JIMBO
__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Old 02-22-2012, 12:57 PM   #21
Jeeper
 
joe002's Avatar
 
Join Date: Nov 2010
Location: Phoenix, AZ
Posts: 1,185
Quote:
Originally Posted by JIMBOX View Post
These guys have done a lotta off-road racing/maintenance and they made it very positive and mandatory that I use Valvoline 75w-90/75w-140 after the 500 miles and FOREVER--




Otherwise--NO warranty with YUKON gears--ya gotta do what ya gotta do !

JIMBO
Yeah, you tow so you gotta go with the 140, I don't so I use the 90.

Don't want to second guess the guys that do your work. The guys that did the work on my Jeep weren’t as strict on the brand of lube as your group, but my installer did say that if I’m not towing then I shouldn’t 140 in there. It looks like baytownbert has the recommendation to use dino. You can get good gear lube in dino, blend or synthetic - get what’s recommended.
__________________
2008 Rubicon, 2 Door, Flame Red, Auto, MyGIG, Power Group, Deep Tint
AEV Pintlers, BFG KM2s 35x12.50x17, Bulldog Fab Rear Stubby Bump, Currie F/R Adj Trac Bars, Daystar Upper Dash, FireStik FireFly Antenna, Kilby Rear Shock Skids, LoD Sig Stubby Front Bump, Midland 75-822 CB, Mopar Filler Door & Locking Gas Cap, Rancho LCA Skid, Rancho Oil Pan Armor, Riddler Diff Covers, TeraFlex 2.5" Spring Lift, Warn PowerPlant HD, Woods Evap Can Relo, Woods SS Relo, Yukon 5.38s
joe002 is offline   Quote Quick Reply
Old 02-22-2012, 01:57 PM   #22
Jeeper
 
JIMBOX's Avatar
 
Join Date: Nov 2009
Posts: 9,914
Yea joe-it's kinda hard to understand, with ALL THE STUDIES that've been done on synthetic oil/grease in the past 15 years--showing their superiority

Gear mfgs like YUKON, recommend that you use the TOP synthetics cause they're th best for the gear heat/wear--and they include the additives for LSD diffs-

Well, if it's your jeep--you do what you want and thats what counts !!

Smokemifyougotem

JIMBO

__________________
"ya gotta have class"
JIMBOX is offline   Quote Quick Reply
Reply

Tags
gear change , gear oil duration

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may 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
Can someone answer this question ?? allblackwrangler00 JK General Discussion Forum 40 02-21-2012 10:54 PM
Timing question tyler1234567 YJ General Discussion Forum 10 02-21-2012 01:44 PM
spare carrier question olbaid_83 YJ Tech Forum 6 02-21-2012 06:45 AM
Need to change my 4.0 head NEED INFO plmcrzy TJ General Discussion Forum 4 02-20-2012 11:55 PM
silly question but- how do I open soft top ? pastorscott TJ General Discussion Forum 17 02-20-2012 11:37 PM



» Featured Product

All times are GMT -5. The time now is 05:40 AM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC