Rotella: The world's first ever combined hair oil, foot ointment, and salad dressing
CF Veteran
Joined: May 2015
Posts: 4,481
Likes: 18
From: Arizona
Year: 97
Model: Cherokee
Engine: 4.0
Where does it leave this thread? Same exact place it started. Everyone has their own opinions on oils and that will never change. I completely agree with what Bugout said though. No matter what oil goes in your Jeep, it will do just fine. Just keep on changing it.
However, when we are talking about 1000hp engines in race cars, the oil makes a difference. I went to an oil class put on by Amsoil and learned a ton. I would be willing to throw any oil in my Jeeps and not think twice about it. But when it comes to the Bug, I did my research and settled on Lucas. And I have a lot of reasons why I chose it but none of those reasons would help the Jeep live longer. The Jeeps oil will never see the pressures and heat that the Bug does and thats where the Lucas comes in handy.
However, when we are talking about 1000hp engines in race cars, the oil makes a difference. I went to an oil class put on by Amsoil and learned a ton. I would be willing to throw any oil in my Jeeps and not think twice about it. But when it comes to the Bug, I did my research and settled on Lucas. And I have a lot of reasons why I chose it but none of those reasons would help the Jeep live longer. The Jeeps oil will never see the pressures and heat that the Bug does and thats where the Lucas comes in handy.
CF Veteran
Joined: Nov 2017
Posts: 2,478
Likes: 275
From: Southern Texas (former AZ & Aus)
Year: 1999
Model: Cherokee(XJ)
Engine: I6 4.0L
Getting ready to change my XJ over to T6 as soon as it's warm enough outside to feel my fingers. lol.
I haven't seen the 5W 30 you mentioned....but I'm going with a 5W 40 T6 which is pretty damn close to that. Relatively inexpensive too. Think it was like 35 for 6 qts. and a quality filter. Which is right in line with most other oil options.
I haven't seen the 5W 30 you mentioned....but I'm going with a 5W 40 T6 which is pretty damn close to that. Relatively inexpensive too. Think it was like 35 for 6 qts. and a quality filter. Which is right in line with most other oil options.
CF Veteran
Joined: Jan 2014
Posts: 1,540
Likes: 351
From: District of Columbia
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
CF Veteran
Joined: Nov 2017
Posts: 2,478
Likes: 275
From: Southern Texas (former AZ & Aus)
Year: 1999
Model: Cherokee(XJ)
Engine: I6 4.0L
Senior Member
Joined: Nov 2013
Posts: 737
Likes: 31
From: Alaska
Year: 1999
Model: Cherokee
Engine: 4.0L I-6
I haven't seen it on the shelf but...
SHELL ROTELLA® T6 MULTI-VEHICLE FULL SYNTHETIC
Apparently it's a special order item.
SHELL ROTELLA® T6 MULTI-VEHICLE FULL SYNTHETIC
Apparently it's a special order item.
Last edited by Bluelight; Jan 1, 2018 at 08:12 PM.
No, I don't lick fish.
Joined: Mar 2011
Posts: 11,169
Likes: 26
From: Northern Kentucky
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
**scratching head**.... I thought it was the reverse that caused issues... meaning that once you go full synthetic and the seals soak up all that extra goodness, that if you went back to a straight conventional oil, that's where the leaks started??..... I mean, I could be wrong, it's happened before... once.... I think it was a Tuesday....... lmao.
But seriously though... am I off base with that line of thinking?
But seriously though... am I off base with that line of thinking?
Same goes for transmission fluid leaks. It may have STARTED leaking when you poured fresh fluid in it, but the cause of the leak was the old *** seals that you've needed to replace for a long time.
CF Veteran
Joined: Nov 2017
Posts: 2,478
Likes: 275
From: Southern Texas (former AZ & Aus)
Year: 1999
Model: Cherokee(XJ)
Engine: I6 4.0L
I've never heard of that happening... sounds fishy to me. Really kinda sounds like some excuse someone "theorized" because they started running an oil with a detergent package that cleaned out the "plugs" in their engine seals which ACTUALLY made it start leaking lol.
Same goes for transmission fluid leaks. It may have STARTED leaking when you poured fresh fluid in it, but the cause of the leak was the old *** seals that you've needed to replace for a long time.
Same goes for transmission fluid leaks. It may have STARTED leaking when you poured fresh fluid in it, but the cause of the leak was the old *** seals that you've needed to replace for a long time.
CF Veteran
Joined: Oct 2013
Posts: 5,924
Likes: 203
From: Greenville, SC
Year: 1999
Model: Cherokee(XJ)
Engine: 4.0
Originally Posted by danbizzle2009
Still on the fence about switching to T6 with my 01 XJ with 93k. I've always used 10w30 conventional. Ticking noise only at idle and a leaking HG. Sigh.
Senior Member
Joined: Sep 2017
Posts: 717
Likes: 8
but they only have the 2.5 gal jug though—that's almost 1.5 changes for me…$55+ tax for the 2.5 gal, that's $5.50/qt at wally world. Not bad at all.
About $2.10 more/qt at the big-box stores
I, too was told that tale that changing oils would ruin your seals. I'd tend to agree with Basslicks, though, if it actually caused the damage rather than expose maintenance sins, you'd think there'd be more of a to-do from a consumer level than there is.
I mean, extra zinc doesn't dissolve anaerobic rtv does it?
No, I don't lick fish.
Joined: Mar 2011
Posts: 11,169
Likes: 26
From: Northern Kentucky
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0
"No loss of coolant"? So how do you know the head gasket is bad? On an 00 or 01 especially, if you have the head off to change out a head gasket, you need to take the head to a machine shop and have it x-rayed. Don't take what you can or can't see for face value. The water jackets could be cracked inside the head where you can't see them, or you could have a crack that's too small for you to see without special equipment.
CF Veteran
Joined: Jun 2016
Posts: 2,929
Likes: 5
From: York PA
Year: 2001
Model: Cherokee
Engine: 4.0 Litre I6
"No loss of coolant"? So how do you know the head gasket is bad? On an 00 or 01 especially, if you have the head off to change out a head gasket, you need to take the head to a machine shop and have it x-rayed. Don't take what you can or can't see for face value. The water jackets could be cracked inside the head where you can't see them, or you could have a crack that's too small for you to see without special equipment.