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Old 03-17-2014, 08:26 PM   #1
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ANOTHER 3.8 bites the dust

So, my wife's DD, an 08 JKU Sahara with 100,000km on it, that we have owned for 9,300km (I know, I know) developed an appetite for its own oil and died (ironically) on the way to the dealership for an oil change. Seized and toast.

In the event that the dealership that sold it leaves me hanging we need it back on the road, so I have a couple questions.

And let me preface this by saying "Hemi swap" is not any help at all. I'd do an LS before I'd ever consider that, but this thing needs to get back on the road ASAP. So please don't kill this thread with that? K?

So, what years will work in the 08? Are all 07-11's created equally, or are some better, different? Seems the ads say fits 07-08, fits 08-10, or fits 07-11. If I end up with a used heart I'd like to know I bought the right one.

Second, does anybody have any experience with ATK motors? My options are so insanely limited up here in Canada that there's not much decision to make but after all the bad stuff I've read about Jasper I've discounted those. ATK are at least available locally and have a 3yr unlimited mileage warranty.

So any thoughts are appreciated, as long as it's not "Hemi swap"

Thanks!

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Old 03-17-2014, 08:46 PM   #2
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check your warranty on the jeep I thought that the 08 have an lifetime warranty. Mine does and it literally says 90 years Crazy. but maybe you do have it too.

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Old 03-17-2014, 08:52 PM   #3
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check your warranty on the jeep I thought that the 08 have an lifetime warranty. Mine does and it literally says 90 years Crazy. but maybe you do have it too.
From what the OP said, it looks like he bought it used. I don't think the lifetime warranty transfers with he vehicle if you sell it. I'm sure somewhere it says, "...for as long as you own the vehicle"

As for the 3.8 motor, it should be the same from 07-11. There's a lot of them out there and with a little patience you can find a decent used one with low miles.
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Old 03-17-2014, 08:53 PM   #4
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Whatchu talkin bout Willis?

That's some crazy stuff right there! Please tell me you're not joking... I'm grasping at any hope I can get here!
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Old 03-17-2014, 08:54 PM   #5
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check your warranty on the jeep I thought that the 08 have an lifetime warranty. Mine does and it literally says 90 years Crazy. but maybe you do have it too.
Warranty does not cover lack of checking your oil level.
In any event I hope the OP gets it back on the road soon.
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Old 03-17-2014, 08:55 PM   #6
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Sorry to hear about your engine!

When is the last time that you checked your engine oil level?

Do you have any oil leaks?
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Old 03-17-2014, 09:01 PM   #7
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Hemi Swap!
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Old 03-17-2014, 09:32 PM   #8
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Hemi Swap!
Hey! It only took 35 minutes!

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Originally Posted by Old Dogger View Post
Sorry to hear about your engine!

When is the last time that you checked your engine oil level?

Do you have any oil leaks?
No leaks, checked oil about 3,000 km ago.

And if anybody here thinks that it's at any time, in any way acceptable for a modern car to burn oil at that rate ( or any rate for that matter ) you need to get out more maybe. That's snowmobile kind of reliability. The kind that bankrupts companies... I have several cars and not a single one of them, not even the race car, uses a single drop of oil. Seriously, i know it's a Jeep thing and all but c'mon...

Thanks for the helpful replies so far!
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Old 03-17-2014, 09:46 PM   #9
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Check out some of the discussions on this forum about drinkin oil like its water. Something about piston ring defect yada yada yada. My 08 with 64,000 miles is using a quart every 1,500-2,000 miles. Keeps me wonderin when its going to go kerplunk.
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Old 03-17-2014, 09:48 PM   #10
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Junkyards and craiglist part outs are your new best friends. Any 3.8 from 07-11 will work. All mount the same. Look for a 2010-11. Earlier engines like yours were known for burning oil.
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Old 03-17-2014, 10:14 PM   #11
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Old 03-17-2014, 10:18 PM   #12
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Originally Posted by Jackster3 View Post
Junkyards and craiglist part outs are your new best friends. Any 3.8 from 07-11 will work. All mount the same. Look for a 2010-11. Earlier engines like yours were known for burning oil.
That in particular is very helpful. I'm aware of the oil consumption issue (now!) and was hoping to hear that the 10-11 would not only fit, but were improved. Excellent....

I can get a brand new for $3k with warranty, and I'm waiting to hear back from AEV. I know the guys that do swaps often have minty stock motors ready to go so that's one avenue. Craig's is dead up here, it's all about Kijiji.

Most wreckers don't know jack, they just ask for the VIN and put it into the computer to check compatibility.
Jeep? Check.
08? Check.
V6? Check.
265,000 km? Check.
It'll fit. Sell it for $4,000 Bubba. But offer the guy a 30 day warranty, labour not included....

I'll shop for an 11 or so...
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Old 03-17-2014, 10:20 PM   #13
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Oh, here's the STK website btw. No idea The difference between the 2 Jeep 3.8's at all. Weird...

Jeep Performance and Remanufactured Engines
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Old 03-17-2014, 10:51 PM   #14
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I'm curious, but did the idiot light not come on at any point prior to locking up? Or was it a case of the low oil pressure light being construed as a 'take your time and think about changing the oil when it's convenient for you' light? Did you not get any warning signs prior to this? Like big oil stains on your driveway, or lots of smoke while driving? If the oil level was checked 3000 km ago, I don't see how it could consume 5 qts of oil that quick without some sort of telltale sign that impending doom was imminent.
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Old 03-17-2014, 11:19 PM   #15
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Warranty does not cover lack of checking your oil level.
In any event I hope the OP gets it back on the road soon.
Thanks that's what I was wondering too.
It's a known problem with 3.8's.
I check mine regularly, because it does eat a quart every 2000 miles.
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Old 03-17-2014, 11:24 PM   #16
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I believe that the oil ring issue, was the early 2007s.
Maybe some 2008s also had the issue!
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Old 03-18-2014, 12:18 AM   #17
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My 2010 burned 1 1/2 Qts every 3k miles, starting at about 8k miles. Sold it with 24k miles on the clock. I'm not convinced they changed anything on the later years.

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Old 03-18-2014, 12:28 AM   #18
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the oil loss issue goes straight through all 3.8 years.
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Old 03-18-2014, 03:35 AM   #19
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My 07 burns about half a qt every 6,000 -8,000 miles. I have been running Mobile 1 5W 30 for over 73,000 miles.
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Old 03-18-2014, 07:15 AM   #20
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I was burning through oil as well ,flipped to mobile 1 syn and tada no more oil burn
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Old 03-18-2014, 07:15 AM   #21
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Why were there so many problems with the 3.8...I was under the impression it was around as a minivan engine for years before they put it in the wrangler....
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Old 03-18-2014, 09:12 AM   #22
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I have also read all the bad reviews about jasper. That being said i have replaced a 5.4 3 valve ford, and a 6.0 LQ4 with jasper motors here at our shop (we work in the coal mines((very hard on trucks))), and have not had any problems with either....
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Old 03-18-2014, 09:23 AM   #23
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the oil loss issue goes straight through all 3.8 years.
I must have gotten a good one I guess. Just traded a '10 JKUS with 45k miles and I've not had a bit of issue with oil consumption. And I've gone as long as 9000 miles between oil change one time.
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Old 03-18-2014, 09:44 AM   #24
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Why were there so many problems with the 3.8...I was under the impression it was around as a minivan engine for years before they put it in the wrangler....
Other than being under-powered, and some burn oil, it is a good proven engine!!!!!!
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Old 03-18-2014, 10:31 AM   #25
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I'm curious, but did the idiot light not come on at any point prior to locking up? Or was it a case of the low oil pressure light being construed as a 'take your time and think about changing the oil when it's convenient for you' light? Did you not get any warning signs prior to this? Like big oil stains on your driveway, or lots of smoke while driving? If the oil level was checked 3000 km ago, I don't see how it could consume 5 qts of oil that quick without some sort of telltale sign that impending doom was imminent.
It kind of went like this.

Couple weeks ago the light would come on at startup and the DIC message would say "change engine oil". So we booked the car in for an oil change as soon as we could get it in.

Left the house on the way to the dealership and we live beside a ski resort, so came on to the main highway (bell had gone off, message to change oil same) and started up the hill. Oil light came on and started beeping but crazy busy highway had to get to the top, got there and it dies as I crested the hill. No burnt oil, no smell, no loud boom, nothing, just the alarm and went about 300 metres before dying. No oil leaks, garage floor is completely clean and dealer says the bottom of the motor is dry. The oil burnt up in the last approx 3000km.

Now I do know from Google-Fu that it is inevitable in these threads that somebody will quickly come in and blame the poster for not checking their oil. At least in a Jeep forum anyways. I certainly could have checked it more, but as I've stated above, my experience wih almost every other major manufacturer is that modern cars don't burn oil. So I don't check them like I did in the 80s. I'd suggest most people don't, and I'd go so far as to say most Jeep owners aren't aware of the oil consumption problem. I spend a lot of time on the net and unless you experience the problem you simply aren't looking for it. Reading how often you guys check your oil and how much you use, that it's acceptable is pretty crazy. It's a Jeep Thing indeed...

Thinking it's ok for a modern engine to burn oil like this is just plain wrong. I'd like to hear more about the lifetime warranty mentioned. They don't offer that unless they know there's a problem. A big one. Not that it's going to change a single thing, just out of curiosity. I know both my paddles are broken and I'm drifting here...
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Old 03-18-2014, 10:42 AM   #26
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Once the oil light comes on, the only hope of saving the engine is to shut it down immediately.
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Old 03-18-2014, 10:57 AM   #27
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I see takeout 3.8's on JKO all the time for cheap. These are businesses doing LS swaps.
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Old 03-18-2014, 11:04 AM   #28
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Other than being under-powered, and some burn oil, it is a good proven engine!!!!!!
That's funny. I drive a 99 caravan (for work) ok so it's my DD lol
It has the 3.3 which is the same engine, just bored different. She has 120k miles and loses no oil. My 07 is somewhere around a quart every 2k like most. From my understanding the mistake was made in the Mexico plant. Not all JK's suffer oil loss.
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Old 03-18-2014, 11:10 AM   #29
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For the record, the 10-11 3.8s are better. They don't have nearly as many issues with oil burning. Mine didn't burn a drop between changes. Was actually a great engine and I have no doubt it would have gone for 200K if I could keep something that long.

Second, ATK sucks. My buddy got a crate engine from them for his WJ and it turned out to be bad. They finally sent another one after many phonecalls and it's not running right either. Shop says it's the #1 cylinder. ATK will not stand behind it and says "it must be installation error". So screw ATK.. I'll never buy from them. I know the owner of the shop personally and I guarantee the job was done right.
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Old 03-18-2014, 11:12 AM   #30
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That's funny. I drive a 99 caravan (for work) ok so it's my DD lol
It has the 3.3 which is the same engine, just bored different. She has 120k miles and loses no oil. My 07 is somewhere around a quart every 2k like most. From my understanding the mistake was made in the Mexico plant. Not all JK's suffer oil loss.
My SPI Focus never dropped a valve seat in the 140k miles I drove it, and my early '12 Pentastar hasn't started ticking yet, but it doesn't mean these engines didn't rightfully earn a reputation.

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