Oil Type for 4.0 Liter - Jeep Wrangler Forum
Jeep Wrangler Forum

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

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 05-22-2013, 04:45 PM   #1
Newb
 
Join Date: May 2013
Posts: 1
Oil Type for 4.0 Liter

I have always used regular 10W30 for my Jeep but now that is has almost 150,000 miles I was wandering if I should use a higher weight or even Synthetic. It has started using about 1 quart every 5,000 miles. What do you think?

creech56 is offline   Quote Quick Reply
Old 05-22-2013, 04:52 PM   #2
Founder, ThumbJeeps

WF Supporting Member
 
sevenservices's Avatar
 
Join Date: Sep 2009
Location: Mid-Michigan/Thumb
Posts: 3,952
Welcome!

Everyone will tell you a thousand different things. Asking what brand of oil or asking what type of lift to install will get all sorts of folks barkin' about whats best for ya.

I won't tell you whats best. But I'll tell you what I run in my 94' 4.0 w/about 180,000 on it. I run Quaker State or Castrol GTX 5w-20. The 5-20 is a thinner oil and seems to lubricate to the top end much faster and keep my lifter ticking a lot quieter. I started going to thinner oil after realizing that anytime I put in a 10-40 or Lucas that my lifters ticked almost twice as loud as they do once the oil is thinned out.

Been runnin' 5w-20 year around w/no issues, no burning oil, no over heating and very minimul ticking from the top end. I'd say from experience, go thinner not thicker. But no matter what, figure out whats best for your engine. If you try a new oil, pay attention to the sound of it at idle at up through the gears once changed. Then, run it a couple weeks and see how it sounds. If you don't like it, change it to something else and re-compare how it runs. Should stay quiet and cool, thats what we want.

__________________
-Chris
Founder, ThumbJeeps


1994 Wrangler YJ I6 4.0 H/O Auto 3 spd. 4" RC (33x12.5) (15x8) 3:54 Gears
sevenservices is offline   Quote Quick Reply
Old 05-22-2013, 04:56 PM   #3
Moderator

WF Supporting Member
::WF Moderator::
 
Sinister6's Avatar
 
Join Date: Jan 2013
Location: Colorado Springs
Posts: 5,523
I would look at Lucas oil stabilizer it's thick and sticky. It sticks to the metal which benefits you especially when the vehicle has sat a long time And all the oil is in the bottom of the Oil pan. I add a quart with every oil change to my jeep.

I used it on my Pathfinder got 275,000 miles... I saw the guy i sold it too...he's got over 300,000 and its still going!
__________________
The Wolf is not concerned with the opinion of sheep.

MY BUILD: :
http://www.wranglerforum.com/f322/si...ad-235526.html
Sinister6 is online now   Quote Quick Reply
Old 05-22-2013, 06:59 PM   #4
Jeeper
 
Tomdata's Avatar
 
Join Date: Mar 2013
Posts: 396
Anything will work in a 4.0l.. The tolerances on these oldschool motors are so loose it doesn't really matter. Synthetic is a waste of $$.... Especially in an oil burning motor

5w20-20w50. Whatever's on sale and new - avoid "recycled oil".
Don't use a cheapy fram filter..
Use a quality filter. Look inside the filter - if you see a metal check valve and fiber element it's probably a good filter. If you see plastic check valve and paper element it's probably junk.
30 minutes of googling will teach you a lot about different oil filter qualities and designs.

The main thing is change it every 3-4k miles and use a quality filter.

Mobile1 - k&n - etc type filters are good but too expensive. The napa gold a quality filter and fair price. Also - the motorcraft (yes ford) filters are great too. Personally I run the motorcraft filter (can't remember part number right now)
Tomdata 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:
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




Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 03:22 PM.



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