Other Vehicles. Other Jeep models & cars and trucks of other makes Talk any vehicle tech in here other than Cherokees.

Best oil?

Old 12-09-2016, 03:16 PM
  #1  
CF Veteran
Thread Starter
 
PNWjeeper's Avatar
 
Join Date: Feb 2012
Location: Southern Oregon
Posts: 1,204
Year: 1990
Model: Cherokee
Engine: 4.0
Default Best oil?

PLEASE STOP AND READ BEFORE POSTING!

My wife's car is a 2005 Chrysler Pacifica (thus why it's in the other car section) with about 100k on the clock, after reading a lot about oil in another thread on here it's got me curious about what the best oil for her car would be. Should I just stick with rotella T6 for her car as well or get something a little more refined for her car?
PNWjeeper is offline  
Old 12-10-2016, 09:58 AM
  #2  
Seasoned Member
 
Nick-B's Avatar
 
Join Date: Jun 2011
Location: Key Peninsula, WA
Posts: 309
Year: 1997
Model: Grand Cherokee
Engine: 4.0
Default

I would stick with the Rotella. Not gonna get much better than that.
Nick-B is offline  
Old 12-10-2016, 10:54 AM
  #3  
Banned
 
Join Date: Feb 2014
Location: Florida
Posts: 2,379
Year: 2000
Model: Cherokee(XJ)
Engine: Golen 4.6L
Default

My family has been using Mobil 1 synthetic for years with really good results. If the motor in that car is loose at all, you can use the Mobil 1 High Mileage version, which has more zinc in it. Keep in mind, however, that high zinc oils kill catalytic converters faster.
extrashaky is offline  
Old 12-10-2016, 08:39 PM
  #4  
Member
 
Join Date: Nov 2016
Posts: 124
Year: 2000
Model: Cherokee
Engine: 4.0
Default

All my jeeps use Castrol high mileage synthetic 5w-30. Have never had an issue. Matter of fact my dad has a 06 Silver Pacifica and i use Castrol high mileage synthetic, it has 131k miles on it now.
Hoenestly is offline  
Old 12-10-2016, 10:19 PM
  #5  
CF Veteran
Thread Starter
 
PNWjeeper's Avatar
 
Join Date: Feb 2012
Location: Southern Oregon
Posts: 1,204
Year: 1990
Model: Cherokee
Engine: 4.0
Default

Yeah I was thinking of doing a synthetic or a blended.
PNWjeeper is offline  
Old 12-11-2016, 05:32 AM
  #6  
tarmac tiara
 
s346k's Avatar
 
Join Date: Feb 2012
Location: central IN
Posts: 2,232
Year: 1997
Engine: 4.0
Default

oil is oil. use the correct weight and change it often. done.
s346k is offline  
Old 12-11-2016, 08:10 AM
  #7  
Banned
 
Join Date: Feb 2014
Location: Florida
Posts: 2,379
Year: 2000
Model: Cherokee(XJ)
Engine: Golen 4.6L
Default

Originally Posted by s346k View Post
oil is oil. use the correct weight and change it often. done.
For what it's worth, Blackstone put out an article last year that says basically the same thing.
extrashaky is offline  
Old 12-11-2016, 09:03 AM
  #8  
CF Veteran
 
caged's Avatar
 
Join Date: Nov 2008
Location: Northern Ontario, Canada
Posts: 7,495
Year: 1990, 1999, 2000
Model: Cherokee
Engine: 4.0
Default

rotella makes a synthetic version. we use that and royal purple synthetic in all our work vehicles.

just don't use any department store or cheap auto store house brand. be sure to use a name brand if you are going the cheap route.

i use whatever is on sale at crappy tire in my jeeps.

synthetic in my vw tdi.
caged is offline  
Old 12-19-2016, 01:28 PM
  #9  
Seasoned Member
 
restoring's Avatar
 
Join Date: Jul 2011
Location: Near Memphis, TN
Posts: 423
Year: 2001
Model: Cherokee
Engine: 4.0
Default

Since the very first oil change in our 2001 XJ, I've used Castrol 10W30, changing the oil and filter every 3,000 miles. I also use Purolator PureOne filters.

After lifting the XJ, I switched to a quality synthetic, high mileage oil. Within 500 miles, oil leaks developed. All the genuine mechanics in my Jeep clubs told me that switching to a synthetic oil on a higher mileage engine usually will usually cause any potential leak areas to start leaking.

Ended up changing the Rear Main Seal, Oil Pan Gasket, and the Valve Cover Gasket (photos in my build thread). The inside of the engine was pretty clean, especially for a Jeep with allot of miles on it. I changed the oil again, and went back to the Castrol 10W30 conventional oil.

We had just checked the cylinder compression shortly beforehand and with about 130,000 miles on the engine it still tested to within 1 or 2 PSI of brand new levels on every cylinder- all from running Castrol 10W30 and changing the oil every 3,000 miles.

If you start using a synthetic, be aware that it could "expose" any potential leaks, requiring gasket and seal changes.

In our F-150 (2013 5 liter, 4x4, towing package), we have had the oil changed by the dealer up until last week when it finally went out from under warranty. Ford uses a synthetic blend so that's what I stuck with when I started changing the oil.

Good Luck!

Last edited by restoring; 12-19-2016 at 01:31 PM.
restoring is offline  
Old 12-19-2016, 08:42 PM
  #10  
Member
 
Join Date: Nov 2016
Posts: 124
Year: 2000
Model: Cherokee
Engine: 4.0
Default

Originally Posted by restoring View Post
Since the very first oil change in our 2001 XJ, I've used Castrol 10W30, changing the oil and filter every 3,000 miles. I also use Purolator PureOne filters.

After lifting the XJ, I switched to a quality synthetic, high mileage oil. Within 500 miles, oil leaks developed. All the genuine mechanics in my Jeep clubs told me that switching to a synthetic oil on a higher mileage engine usually will usually cause any potential leak areas to start leaking.

Ended up changing the Rear Main Seal, Oil Pan Gasket, and the Valve Cover Gasket (photos in my build thread). The inside of the engine was pretty clean, especially for a Jeep with allot of miles on it. I changed the oil again, and went back to the Castrol 10W30 conventional oil.

We had just checked the cylinder compression shortly beforehand and with about 130,000 miles on the engine it still tested to within 1 or 2 PSI of brand new levels on every cylinder- all from running Castrol 10W30 and changing the oil every 3,000 miles.

If you start using a synthetic, be aware that it could "expose" any potential leaks, requiring gasket and seal changes.

In our F-150 (2013 5 liter, 4x4, towing package), we have had the oil changed by the dealer up until last week when it finally went out from under warranty. Ford uses a synthetic blend so that's what I stuck with when I started changing the oil.

Good Luck!
SOOOOO true synthetic has the potential to break through all the gunk and deposits (that usually help clog any leaks). If you have been using synthetic then its fine, but if you haven't and suddenly decide to make the switch then some spots in the driveway might pop up lol.
Hoenestly is offline  
Old 12-19-2016, 10:09 PM
  #11  
CF Veteran
Thread Starter
 
PNWjeeper's Avatar
 
Join Date: Feb 2012
Location: Southern Oregon
Posts: 1,204
Year: 1990
Model: Cherokee
Engine: 4.0
Default

Originally Posted by Hoenestly
SOOOOO true synthetic has the potential to break through all the gunk and deposits (that usually help clog any leaks). If you have been using synthetic then its fine, but if you haven't and suddenly decide to make the switch then some spots in the driveway might pop up lol.
I own a jeep, spots in the driveway is nothing new lol. And yeah I've heard the switch between conv. and synth oil can cause leaks, unfortunately I have no idea what's been going into it for the last 3 years. Pretty sure she has been going to Pennzoil each time, and I've heard bad things about them, like using mostly reused, not to be confused with recycled, oil when doing oil changes.
PNWjeeper is offline  
Old 12-20-2016, 10:48 PM
  #12  
Senior Member
 
Join Date: Jun 2016
Location: Santa Clarita California
Posts: 777
Year: 2001
Model: Cherokee
Engine: 4.0L
Default

I would use Mobil 1 synthetic its a vary good oil you can get it almost any where and walmart has a good price on it . I used Mobil 1 synthetic on all my cars even the ones that had 100,000 miles or more . my xj has 150,00 on it and my other car has about 200,000 or more they both use 10w40 Mobil 1 synthetic High Mileage and no leaks . the best thing you can do is try a oil and see if the car likes it , no leaks and doesn't burn it .
tech is online now  
Old 12-23-2016, 09:30 PM
  #13  
Newbie
 
Thing Driver's Avatar
 
Join Date: Dec 2016
Posts: 1
Model: Cherokee
Default

When it comes to oil, everyone has an opinion based on experience. For me, Castrol 10W-30 non-synthetic has been my go to for several years. I dare say 20W-50 was my normal summer oil for the first 10 years we had the Cherokee. Wife's is a '99 with 254K miles and running strong. No leaks, no burning oil, 19 mpg. She is a member of the family at this point.


My '04 WJ has 176K miles and runs great on Castrol 10W-30 synthetic blend. Our '06 Chrysler Pacifica just turned 200K miles with the same oil. Both of these cars began life with Mobil 1 from the shop my dad used. The last several years have been Castrol.


I have had 3 other cars all cross the 225K mile mark on standard Castrol over the last 10 years. All of them were running great when they met their end. Some were hit, some rusted, but motor issues were never a problem.
Thing Driver is offline  
Old 12-23-2016, 09:41 PM
  #14  
CF Veteran
 
Join Date: Oct 2008
Location: Hell, CA
Posts: 2,127
Year: 1989
Model: Cherokee
Engine: 4.0L I6
Default

Originally Posted by PNWjeeper View Post
PLEASE STOP AND READ BEFORE POSTING!

My wife's car is a 2005 Chrysler Pacifica (thus why it's in the other car section) with about 100k on the clock, after reading a lot about oil in another thread on here it's got me curious about what the best oil for her car would be. Should I just stick with rotella T6 for her car as well or get something a little more refined for her car?
Originally Posted by PNWjeeper View Post
Yeah I was thinking of doing a synthetic or a blended.
Rotella T6 is synthetic..

Originally Posted by Hoenestly View Post
SOOOOO true synthetic has the potential to break through all the gunk and deposits (that usually help clog any leaks). If you have been using synthetic then its fine, but if you haven't and suddenly decide to make the switch then some spots in the driveway might pop up lol.
Originally Posted by PNWjeeper View Post
I own a jeep, spots in the driveway is nothing new lol. And yeah I've heard the switch between conv. and synth oil can cause leaks, unfortunately I have no idea what's been going into it for the last 3 years. Pretty sure she has been going to Pennzoil each time, and I've heard bad things about them, like using mostly reused, not to be confused with recycled, oil when doing oil changes.
The myth of full syn oil causing leaks is BS! Get that crap out of your head.
If you already have a leak, large or small, funn syn will make it more pronounced. The reason why is.. the molecules are equal size. Whereas, dino/conventional oil not.
Pennzoil plat/ultra is good, the rest of their stuff is garbage.

Last edited by Metmknice; 12-23-2016 at 09:47 PM.
Metmknice is offline  
Old 01-01-2017, 12:49 PM
  #15  
Newbie
 
Join Date: Dec 2016
Posts: 26
Model: Cherokee
Default

Originally Posted by s346k View Post
oil is oil. use the correct weight and change it often. done.
I agree with this. Some may be better than others in certain areas. Overall, that all will do their job if you do yours.
shawnster88 is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description: