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07 JK Sahara - 3.8 V6.

Today, the oil light flashed on the dash for just a second while I was going up hill, so when I got home, I checked it & found it to be over 3 quarts low! I have no idea how that could have occurred. I religiously change my oil at or about 3k, have no leaks, no burning of oil while running (no smoke), and I use 5w20 as recommended in the manual (though I choose synthetic).

Anyone else experience this at all??
 

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ya. i hear some jks burn through oil like crazy and others have no issues. what you might want to try is running 5W30 synthetic so it helps with consumption and engine noises (if your having any)
 

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07 JK Sahara - 3.8 V6.

Today, the oil light flashed on the dash for just a second while I was going up hill, so when I got home, I checked it & found it to be over 3 quarts low! I have no idea how that could have occurred. I religiously change my oil at or about 3k, have no leaks, no burning of oil while running (no smoke), and I use 5w20 as recommended in the manual (though I choose synthetic).

Anyone else experience this at all??
If your were 3 quarts low, the oil just didn't disappear. Either you have a leak or the engine is using oil.
 

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SilverRubi said:
If your were 3 quarts low, the oil just didn't disappear. Either you have a leak or the engine is using oil.

Not trying to be a smarta*s, but yes, I kinda figured it was one or the other ;-)

I guess I was trying to get an idea from others here on the forum as to if this is a known and/or common issue, or possibly an issue with my rig. That being said, Pluke answered my question... thanks
 

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Lots of 07's have that problem; it is a known and well documented problem. It is really important to check your oil often so you will never be three quarts low again, unless you just don't add it when it is needed.
 

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tjt94 said:
Lots of 07's have that problem; it is a known and well documented problem. It is really important to check your oil often so you will never be three quarts low again, unless you just don't add it when it is needed.
Thanks tj. I'm meticulous about my vehicles both mechanically & visually, so I'll stay atop this issue for sure!
 

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Not trying to be a smarta*s, but yes, I kinda figured it was one or the other ;-)

I guess I was trying to get an idea from others here on the forum as to if this is a known and/or common issue, or possibly an issue with my rig. That being said, Pluke answered my question... thanks
No problem, I wasn't trying to be a smartass either. Just that you said it wasn't leaking and wasn't burning it. :wavey:
 

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Not sure about your state's lemon laws (or if you are even the original owner), but Nissan had to buy back my '06 350Z due to oil consumption under the lemon law.
 

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:dance: hi, my last jeep was a 07 jk i had no oil loss at all, take a look under
around the oil pan, and oil filer, how many miles, if you are the first owner
and have less than 50k miles, you may get help from ur jeep dealer, it;s worth a try....:)
 

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You're most likely using (burning) oil. You're not going to see it. Chrysler believes it's within spec for a 3.8 to burn 1qt. every 1,000 miles. Everyone else knows that's insane, but it's their bat and ball. Keep a record of it and if it burns more than that you might have recourse, meaning you may get authorized for a consumption test. If it's at the threshold you'll just have to keep adding.
 

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Holy hell... a quart every 1000 miles?? Yeah, insane to say the least! I'm moving up to 5w30 to see of that helps at all.
 

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Chrysler believes it's within spec for a 3.8 to burn 1qt. every 1,000 miles.
Link? Is this documented somewhere? Total BS on Chrysler's part.

My 09 JK used no oil. If this is only on 07's then it's a known issue, and I'd be going after a new engine under warranty if it were me, and I'm sure many other owners would have. You wouldn't need to add that much oil on a beater with 200,000 miles on it. If you were using that much you'd be seeing smoke behind you.

I find it hard to believe that some change was made with the 3.8 in 08 that caused it to not use oil.
 

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Link? Is this documented somewhere? Total BS on Chrysler's part.


I find it hard to believe that some change was made with the 3.8 in 08 that caused it to not use oil.
If you do a search you will find there were some issues involving incorrect installation of the oil rings on pistons for some engines that were assembled in Mexico in 07 and 08. These became oil users. For some reason there was not a recall though. There are members here and on other forums that really blew up the boards with their claims that all of the 3.8's are crap and will use oil. I have an 09 and it is not an oil user; it takes about 1/2 quart every 3000 miles in extremely hot conditions. That is very acceptable.
 

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Link? Is this documented somewhere? Total BS on Chrysler's part.

My 09 JK used no oil. If this is only on 07's then it's a known issue, and I'd be going after a new engine under warranty if it were me, and I'm sure many other owners would have. You wouldn't need to add that much oil on a beater with 200,000 miles on it. If you were using that much you'd be seeing smoke behind you.

I find it hard to believe that some change was made with the 3.8 in 08 that caused it to not use oil.
There are a number of cases of oil burners post 08 also. It's not limited to only 07 and 08. As far as being documented, just check with any dealer they'll be more than happy to inform you of Chrysler's 1 per 1,000 policy. My 10 doesn't use any. There have been some problems with engines assembled in Mexico as was stated. Your window sticker will tell you where your engine and trans was assembled without having to try and find the code on the block.
 

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First try switching to 5W30 as this helped with my oil consumption on my 08 JKU. I was loosing about 1.5 Quarts every 3000miles. Switched to 5W30 and I have next to nothing for oil consumption.

If you still are having oil consumption issues look at switching out your PCV valve. If your PCV valve has failed, it isn’t sucking oil fumes out of the crankcase, but instead, it’s inhibiting their removal and creating pressure inside the crankcase. This pressure helps force oil past the piston rings and into the combustion chamber.
 

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If the engine was assembled in Mexico as many 3.8L engines were that could be your problem. The rings were installed upside down and are the cause of the high oil consumption. Check the vin # for a clue as to where the engine was assembled. It is well documented and mentioned more than once on this site. I'm not sure about the code for an engine assembled in Mexico but a quick search should tell you. HTH
 

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Hey all, I have an 09 that was a chronic oil consumer. At 70k I finally reached my frustration point and brought it to my dealer. I'll give Fields Jeep (IL) kudos... They had it for an hour, called me and asked for me to bring in oil change records (did most oil changes away from dealer) and next thing you know, no fight at all-new engine installed.
 

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Discussion Starter #19
Cigar196 said:
Hey all, I have an 09 that was a chronic oil consumer. At 70k I finally reached my frustration point and brought it to my dealer. I'll give Fields Jeep (IL) kudos... They had it for an hour, called me and asked for me to bring in oil change records (did most oil changes away from dealer) and next thing you know, no fight at all-new engine installed.
When you say "chronic", what exactly do you mean?

Apparently Chrysler feels 3 quarts consumption in between regular oil changes (every 3k) is within acceptable levels. Was your more, less? Did they mention that to you when you addressed the problem with them? If they only had it an hour before authorizing an engine swap, I'd say no, and could only assume there was no consumption test conducted either...
 

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Yes, Chryslerls official view is 1 quart of consumption per 1K miles is ok. I have heard mention of the Mexico engine fiasco on here too but then others said it wasn't true. If it was I would think the problem would be isolated to one model year not several. When I was on here researching before buying my 2011, there were a few members with 2010s that had excessive oil consumption.
 
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