Synthetic Fluids Help - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ 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 02-18-2014, 03:34 PM   #1
Jeeper
 
mudbug89's Avatar
 
Join Date: Jul 2012
Location: southern cali
Posts: 60
Synthetic Fluids Help

I'm changing fluids in my 89 yj and i have decided to go with the royal purple syncromax manual transmission fluid for my transmission. Now is that okay to use in my transfer case too? or will i need to get atf for that?


mudbug89 is offline   Quote Quick Reply
Old 02-18-2014, 08:03 PM   #2
Jeeper
 
Hawaii5O's Avatar
 
Join Date: Dec 2013
Location: Schofield Barracks, HI
Posts: 212
From what I've been reading on here, the general consensus is to use Royal Purple 10W-30 motor oil for the tranny.

I haven't done the switch yet but I plan on doing it soon.

__________________
I am a man of simple tastes easily satisfied with the best” ― Winston Churchill
Hawaii5O is offline   Quote Quick Reply
Old 02-19-2014, 07:47 AM   #3
Jeeper
 
mocoyj's Avatar
 
Join Date: Jul 2013
Posts: 45
It would probably be fine for the transfer case but Automatic transmission fluid (atf) is what it calls for and is alot cheaper.
__________________
88 YJ. Most likely in the shop.
mocoyj is offline   Quote Quick Reply
Old 02-19-2014, 08:17 AM   #4
Jeeper
 
luv2bmx22's Avatar
 
Join Date: Sep 2012
Location: West Branch, MI
Posts: 81
Images: 1
Just as mocoyj said it says to use atf, but I don't think using RP will damage it. If you decide to go with the RP, don't worry about the cost for putting it in the transfer case; it takes a very small amount.
luv2bmx22 is offline   Quote Quick Reply
Old 02-19-2014, 11:36 AM   #5
Jeeper
 
Hawaii5O's Avatar
 
Join Date: Dec 2013
Location: Schofield Barracks, HI
Posts: 212
Quote:
Originally Posted by luv2bmx22 View Post
Just as mocoyj said it says to use atf, but I don't think using RP will damage it. If you decide to go with the RP, don't worry about the cost for putting it in the transfer case; it takes a very small amount.
What is the capacity for the tranny/transfer case?
__________________
I am a man of simple tastes easily satisfied with the best” ― Winston Churchill
Hawaii5O is offline   Quote Quick Reply
Old 02-19-2014, 12:00 PM   #6
Jeeper
 
Join Date: Jan 2014
Posts: 193
For the ax5 it is 3.3 quarts. Not sure about the ax15 though
scukfan is offline   Quote Quick Reply
Old 02-25-2014, 04:49 PM   #7
Jeeper
 
mudbug89's Avatar
 
Join Date: Jul 2012
Location: southern cali
Posts: 60
The ax 15 takes a bit more, so grab 4quarts for the tranny. I'll be doing the fluid change here soon. The atf and syncromesh mtf are suppose to show up on the 28th. I'll post a write up with pics after and put the link on here.
mudbug89 is offline   Quote Quick Reply
Old 02-25-2014, 07:33 PM   #8
Supporting Member

WF Supporting Member
 
nmill5321's Avatar
 
Join Date: Aug 2012
Location: Newburyport MA
Posts: 493
AX15 is about 3.5 quarts and the np231 is a little over a quart. I went with Mobil 1 synthetic 10w30 in the trans and ATF in the transfer case. Not problems since I rebuilt them both. Making the jump to Redline or Royal Purple this spring when I change both fluids.

__________________
"Some days you eat the bear, and some days the bear eats you"

My Build: '92 YJ 4.0, AX15 with 4" RC lift, SYE, Tom Woods drive shaft, 33x12.50 Hankook Dynapro MT, 4.10's

-Nick
nmill5321 is offline   Quote Quick Reply
Reply

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




» Featured Product

All times are GMT -5. The time now is 12:28 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