Engine oil
03-28-2012, 08:35 PM
#7
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Year: 99
Model: Cherokee
Engine: 4L
All the search replies could have just answered, guys new, suggest search but help out.
I will never put synthetic in an engine that has more then 50k miles, sometimes no big deal but ive seen three engines fail right after switching from std oil. It has alot of cleaners in it that can clean out thinngs that are now "part of" your engine or gaskets. Reg oil is fine just change every 3-5k based on how hard you use your.
I will never put synthetic in an engine that has more then 50k miles, sometimes no big deal but ive seen three engines fail right after switching from std oil. It has alot of cleaners in it that can clean out thinngs that are now "part of" your engine or gaskets. Reg oil is fine just change every 3-5k based on how hard you use your.
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03-28-2012, 08:50 PM
#8
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Year: 2000, (1957 Willys)
Model: Cherokee
Engine: 4.0L
Bobistheoilguy.com
Great information.
As far as older engines failing when introduced to synthetics, I can't dispute that they failed. But the engine was already worn, and no build up or deposit left by conventional oil will withstand much wear. Especially if a simple change in detergents 'washed' them out. Again, I wasn't there, but synthetic oil has every advantage over conventional. It cools better, maintains it's viscosity, and most importantly, shortens the time it takes for a cold engine to be lubricated. Thats where 90% of engine wear occurs.
My .02£
Great information.
As far as older engines failing when introduced to synthetics, I can't dispute that they failed. But the engine was already worn, and no build up or deposit left by conventional oil will withstand much wear. Especially if a simple change in detergents 'washed' them out. Again, I wasn't there, but synthetic oil has every advantage over conventional. It cools better, maintains it's viscosity, and most importantly, shortens the time it takes for a cold engine to be lubricated. Thats where 90% of engine wear occurs.
My .02£
03-28-2012, 09:20 PM
#9
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Year: 1991
Model: Cherokee
Engine: I-6 4.0 HO
And I am being totally serious. You don't want an explosion of opinions, madness, and flames? Then search and get quick info. If I tried to bring up a link for every oil thread regarding the Jeep 4.0 in existance, it would likely crash the site. If you cannot search, click this link:
http://lmgtfy.com/?q=Jeep+Cherokee+oil+type
Last edited by 1991Jeep_Man; 03-28-2012 at 09:23 PM.
03-29-2012, 07:25 PM
#11
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Year: 99
Model: Cherokee
Engine: 4L
Bobistheoilguy.com
Great information.
As far as older engines failing when introduced to synthetics, I can't dispute that they failed. But the engine was already worn, and no build up or deposit left by conventional oil will withstand much wear. Especially if a simple change in detergents 'washed' them out. Again, I wasn't there, but synthetic oil has every advantage over conventional. It cools better, maintains it's viscosity, and most importantly, shortens the time it takes for a cold engine to be lubricated. Thats where 90% of engine wear occurs.
My .02£
Great information.
As far as older engines failing when introduced to synthetics, I can't dispute that they failed. But the engine was already worn, and no build up or deposit left by conventional oil will withstand much wear. Especially if a simple change in detergents 'washed' them out. Again, I wasn't there, but synthetic oil has every advantage over conventional. It cools better, maintains it's viscosity, and most importantly, shortens the time it takes for a cold engine to be lubricated. Thats where 90% of engine wear occurs.
My .02£
Everything in me says the same thing but thats what happen ive had guys tell me same thing about changing tranny fluid after 100k if it was never changed, who knows. I always ran mobil 1 in my srt-4 it used to be alot cheaper haha
03-29-2012, 07:59 PM
#12
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Falls into the category of "Those who haven't done it are telling those of us who have done it, that it can't be done."
03-29-2012, 10:54 PM
#13
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Ive seen it happen, come to think of it my first car (87 lesabre) had trans fail after i had it flushed and refill only one day later. The engine thing, my friend changed to mobil one on his 80s jeep and that same day engine failed, if i hadnt seen it happen i wouldnt think there was any truth to it.must be a one in a million thing im just real lucky
03-29-2012, 11:27 PM
#14
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Ive seen it happen, come to think of it my first car (87 lesabre) had trans fail after i had it flushed and refill only one day later. The engine thing, my friend changed to mobil one on his 80s jeep and that same day engine failed, if i hadnt seen it happen i wouldnt think there was any truth to it.must be a one in a million thing im just real lucky
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