Switched to Rotella 15W40 - 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 > Models > Jeep Wrangler Forums > TJ Wrangler Technical Forum > Switched to Rotella 15W40

FLASH SALE! Open thread to reveil the Newest Sale @ ROCKRIFS: Wrangler RGB Multicolor Fog Light LEDs: Awesome EffectIntroducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

Reply
Unread 08-05-2014, 07:21 PM   #1
clayduster71
Registered User
2005 LJ Wrangler 
 
Join Date: Aug 2013
Location: Jonesborough, Tennessee
Posts: 51
Switched to Rotella 15W40

I switched a few thousand miles ago to Rotella 15w40. I have been pretty impressed with the results of making this move:
- Puddle of oil from rear main leaking each morning under jeep completely gone
- Lifter noise completely gone
- Gas mileage exactly the same
- No difference in perceived power

I have 120k on this 2005 LJ. It may not be the perfect oil for this engine, but it sure did correct issues that I've been having with it.

clayduster71 is offline   Reply With Quote Quick reply to this message
Unread 08-05-2014, 07:47 PM   #2
2jhanna
Web Wheeler
2002 TJ Wrangler 
 
Join Date: Jun 2007
Location: Denton County, TX
Posts: 6,195
How long/bad was the RMS leaking before the 15/40?

Have you washed off the underside to see if it has really stopped?
__________________
jhanna
denton county, tx
2jhanna is offline   Reply With Quote Quick reply to this message
Unread 08-05-2014, 08:42 PM   #3
Andy5150
Registered User
2003 TJ Wrangler 
 
Join Date: Nov 2005
Location: Palm Harbor, Fl.
Posts: 613
My diesel Silverado loves it, but when I was trying to cure the 4.0 lifter tick, it didn't do the job. Its great oil, and a lot of people have had good results, but for me, it was Mobil 1 10/30 High Mileage that did the job long term.I tried 15/40 Rotella, and about 4 other oils, and the tick always returned after a few weeks. If it keeps your motor quiet between oil changes, stick with it.
Andy5150 is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 12:01 AM   #4
Maverickxeo
Registered User
2002 TJ Wrangler 
 
Join Date: Jan 2010
Location: Wetaskiwin, Alberta
Posts: 2,074
I found 15w40 rotella make my tick worse, especially on cold start ups. 5w40 rotella though, worked great.

I currently run mobil 1 5w30 synthetic because I got a bunch of it on a great deal.
Maverickxeo is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 04:15 AM   #5
clayduster71
Registered User
2005 LJ Wrangler 
 
Join Date: Aug 2013
Location: Jonesborough, Tennessee
Posts: 51
Yes, I did wash the engine. I had to put a piece of cardboard under my jeep to keep the oil off the concrete in my garage. There used to be a spot under it about the size of the end of a beer car each morning. Since I switched to Rotella 15W40, no spot at all on the new cardboard.
clayduster71 is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 08:12 AM   #6
Jwinecoff00
Senior Member
 
Jwinecoff00's Avatar
2006 LJ Wrangler 
 
Join Date: Apr 2007
Location: China Grove, NC
Posts: 677
Quote:
Originally Posted by clayduster71 View Post
Yes, I did wash the engine. I had to put a piece of cardboard under my jeep to keep the oil off the concrete in my garage. There used to be a spot under it about the size of the end of a beer car each morning. Since I switched to Rotella 15W40, no spot at all on the new cardboard.
That's a pretty substantial leak! Hope it doesn't return.. I just did the RMS job a few weeks ago and it's not so bad really.
__________________
2006 Solar Yellow LJ Rubicon

Build Thread: http://www.jeepforum.com/forum/f22/j...build-2068833/

Follow me on Instagram @Jwinecoff
Jwinecoff00 is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 04:11 PM   #7
RandyTJ
Registered User
2005 LJ Wrangler 
 
Join Date: May 2007
Location: , Ohio
Posts: 308
Quote:
Originally Posted by clayduster71 View Post
I switched a few thousand miles ago to Rotella 15w40. I have been pretty impressed with the results of making this move:
- Puddle of oil from rear main leaking each morning under jeep completely gone
- Lifter noise completely gone
- Gas mileage exactly the same
- No difference in perceived power

I have 120k on this 2005 LJ. It may not be the perfect oil for this engine, but it sure did correct issues that I've been having with it.
Kind of ironic..........In my past two Jeeps , for the last 12 years I have been using Rottela 15w40.

About six months ago I switched over to Quaker State Defy 5w30.........so far so good.

I figured I would get a little easier starting in cold weather, maybe slight increase in gas mileage, and a little more protection on the flat tappet engine.
__________________
White 2005 LJ, Rubicon, Rubicon Express 3.5 SuperFlex, Goodyear 315/75/16 MTR's, Pro Comp 97 16x8 wheels, UCF Tummy Tuck, 1" Prothane BL, 1" JKS MML,Tereflex Disco's, 10,000 lb. winch. CB Radio, Fire Extinguister, Synthetic Fluids, Driving Lights....
1999 XJ 6.5 Lift, Rusty's Long Arm, Four Link Rear Suspension, ARB Lockers Front and Rear, Alloy Axles....
RandyTJ is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 06:21 PM   #8
arg0413
Registered User
1997 TJ Wrangler 
 
Join Date: Dec 2012
Location: Baton Rouge, LOUISIANA
Posts: 200
That is way too thick of an oil to run in that engine. Your masking the tick and the leak with Molasses lol You can cause substantial start up wear with an oil that thick, it takes much longer for the viscosity to change and it actually work from start up. Read all 10 chapters from this lubricity engineer, it's very insightful:

http://www.bobistheoilguy.com/motor-oil-101/

I personally run 5W-30 Mobil 1, 0W-30 when I can find it. If your set on running a 40W oil, run a 5W-40, not a 15W-40.
__________________
1997 TJ: 4.0/AX15, 4.11/Tru Track & 4340 Shafts in rear (D35) 35" MTR/K
arg0413 is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 06:27 PM   #9
Vettster
Registered User
2006 TJ Wrangler 
 
Join Date: Feb 2010
Location: Veracruz, Ver. Mexico
Posts: 26
Quote:
Originally Posted by arg0413 View Post
That is way too thick of an oil to run in that engine. Your masking the tick and the leak with Molasses lol You can cause substantial start up wear with an oil that thick, it takes much longer for the viscosity to change and it actually work from start up. Read all 10 chapters from this lubricity engineer, it's very insightful:

http://www.bobistheoilguy.com/motor-oil-101/

I personally run 5W-30 Mobil 1, 0W-30 when I can find it. If your set on running a 40W oil, run a 5W-40, not a 15W-40.
I don't usually respond to oil threads but my 06 Rubicon calls for 15-40 in the owners manual.
I use 15-40 Royal Purple.
Vettster is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 06:34 PM   #10
arg0413
Registered User
1997 TJ Wrangler 
 
Join Date: Dec 2012
Location: Baton Rouge, LOUISIANA
Posts: 200
Quote:
Originally Posted by Vettster View Post
I don't usually respond to oil threads but my 06 Rubicon calls for 15-40 in the owners manual.
I use 15-40 Royal Purple.
My '97 Calls for 5W-30, same engine! Do you know the difference between a 15W-40 and a 5W-40? They are both 40W oils, the difference is the viscosity when cold, which drastically affects wear and tear on the engine. There is no reason to ever run a 15W-40, only negative effects will be gained by such actions.
__________________
1997 TJ: 4.0/AX15, 4.11/Tru Track & 4340 Shafts in rear (D35) 35" MTR/K
arg0413 is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 06:45 PM   #11
Vettster
Registered User
2006 TJ Wrangler 
 
Join Date: Feb 2010
Location: Veracruz, Ver. Mexico
Posts: 26
Quote:
Originally Posted by arg0413 View Post
My '97 Calls for 5W-30, same engine! Do you know the difference between a 15W-40 and a 5W-40? They are both 40W oils, the difference is the viscosity when cold, which drastically affects wear and tear on the engine. There is no reason to ever run a 15W-40, only negative effects will be gained by such actions.
Yes. I know the difference. It's what the owners manual calls for.
Mine is an export model sold in Mexico.
Vettster is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 09:49 PM   #12
Toonces
Registered User
1997 TJ Wrangler 
 
Join Date: Feb 2011
Location: Tucson, AZ
Posts: 175
Quote:
Originally Posted by Vettster View Post
Yes. I know the difference. It's what the owners manual calls for.
Mine is an export model sold in Mexico.
Yeah, I doubt you see anything as low as -20 C there to warrant a thinner oil. My guess is the manufacturer knows what they're recommending.
Toonces is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 11:01 PM   #13
Vettster
Registered User
2006 TJ Wrangler 
 
Join Date: Feb 2010
Location: Veracruz, Ver. Mexico
Posts: 26
Quote:
Originally Posted by Toonces View Post
Yeah, I doubt you see anything as low as -20 C there to warrant a thinner oil. My guess is the manufacturer knows what they're recommending.
My point "zactly".
We don't do -20 here.
Vettster is offline   Reply With Quote Quick reply to this message
Unread 08-06-2014, 11:50 PM   #14
wushaw
Rockin jeep
 
wushaw's Avatar
2000 TJ Wrangler 
 
Join Date: Jan 2007
Location: Texas
Posts: 8,167
Quote:
Originally Posted by arg0413
My '97 Calls for 5W-30, same engine! Do you know the difference between a 15W-40 and a 5W-40? They are both 40W oils, the difference is the viscosity when cold, which drastically affects wear and tear on the engine. There is no reason to ever run a 15W-40, only negative effects will be gained by such actions.
I guess I've been lucky for 14 years and 130.000 miles, that's how long I've been running 15-40 Rotella in mine, no noises and runs like a sewing machine.
wushaw is offline   Reply With Quote Quick reply to this message
Unread 08-07-2014, 02:50 AM   #15
Robert J. yates
Registered User
1998 TJ Wrangler 
 
Join Date: Jan 2003
Location: mars
Posts: 3,054
15/40 is actually export spec.... We get a thin oil to meet cafe standards here. I ran Rotella T for awhile for the enhanced ZDDP package until they downsized it. No issues here ever with it.
__________________
Quote:
Originally Posted by samgm2 View Post
And yes, I am an exceptional scientist and engineer.
Robert J. yates 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.