Oil weight - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Engines & Drivetrain > Oil weight

ROCKRIDGE4WD Introduces a NEW Jeep Wrangler JK *led* tail ANOTHER Rockridge4wd Creation!! Spare Tire Carrier Delete JEEP Gear Change Packages From ROCKRIDGE 4WD. We Are DIFF

Reply
Unread 12-29-2012, 09:12 PM   #1
deadvolts480
Registered User
 
Join Date: Dec 2012
Posts: 3
Oil weight

I put 5w 20 in stead of 10w 30in my 04 TJ my oil pressure is lower that normal should I key it be or will this hurt my engine

deadvolts480 is offline   Reply With Quote Quick reply to this message
Unread 01-02-2013, 12:33 AM   #2
seattle_yj
Registered User
1993 YJ Wrangler 
 
Join Date: Jun 2012
Location: Issaquah, WA
Posts: 948
Quote:
Originally Posted by deadvolts480
I put 5w 20 in stead of 10w 30in my 04 TJ my oil pressure is lower that normal should I key it be or will this hurt my engine
It should be fine, I've run 5w30 for the last decade and I'm on 146k miles, no issues.
seattle_yj is offline   Reply With Quote Quick reply to this message
Unread 01-02-2013, 12:37 AM   #3
redaztec
Registered User
1998 XJ Cherokee 
 
Join Date: Jan 2008
Location: Albuquerque, New Mexico
Posts: 67
Which engine do you have? I wouldn't run 5W20 unless Jeep recommends it. for my 4.0 Jeep states either 10W30 or 5W30 is acceptable, for what it's worth.
redaztec is offline   Reply With Quote Quick reply to this message
Unread 01-02-2013, 08:53 AM   #4
Demp
Registered User
2013 JK Wrangler 
 
Join Date: Apr 2010
Posts: 1,223
Your oil pressure is lower because your oil is thinner and flows more easily through the engine. Thinner oil may not provide intended lubrication which can contribute to early wear. Many actually recommend going to 5W30 if you live in icy conditions, just to help the oil get through the engine until it is warm.

5W20 may be pushing it, as at running temps your oil is going to be thinner. For those who weren't aware, the numbering/weight for oil is the thickness/viscosity at a certain temperature.

For example:
SAE30 is constant at all reasonable temperatures (cold or hot)
10W30 has a weight of 10 at cooler temperatures (such as freezing) but has a weight of 30 at 210 degrees F. The W stands for "Winter".

This is done to get oil through the engine after sitting off, and as the engine warms up the oil thickens to provide more lubrication/protection.
Demp is offline   Reply With Quote Quick reply to this message
Unread 01-02-2013, 11:17 AM   #5
deadvolts480
Registered User
 
Join Date: Dec 2012
Posts: 3
Ok thanks to all that responded. Ill be changing it very soon
deadvolts480 is offline   Reply With Quote Quick reply to this message
Unread 01-02-2013, 08:37 PM   #6
cruiser54
Web Wheeler
 
cruiser54's Avatar
1990 MJ Comanche 
 
Join Date: Oct 2009
Location: Prescott, Arizona
Posts: 10,163
What brand of oil filter did you use this time? What brand last time? Very important.
__________________
Quote:
Originally Posted by chris87xj View Post
If you own a Renix Jeep, you'll want to check this out. >

An index to over 25 write-ups can be found in Post #1.

Cruiser's Mostly Renix Tips
My Jeep Technical Photos

http://www.cherokeeforum.com/g/album/1725214
cruiser54 is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com 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 e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
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






Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.