Oil consumption, Factory Warranty?

[kckj]

Little background:
I have a 04 Liberty sport with the RARE 2.4L 4X4. Hard to find any of these around. Anywho, started burning some oil around 55,000 miles. It has 65,00miles on it now.

So I called, and I am still under the powertrain warranty. How much time and money do you suppose they are they going to spend fixing this problem. I have already changed the pcv valve 5k miles ago. Didn't help.

Worse case scenario, Oil consumption around valves or pistons. That kind of work would almost be worth more than the vehicle. But are they REQUIRED to FIX it under warranty?

Thoughts??

 

[RageOfFury]

What type of oil are you using?

Oh and your question would be better answered over at BITOG forum : http://www.bobistheoilguy.com/forums

 

[ptsb5a]

I think Rage missed the point. It's too late to discuss the merits of oil A vs oil B. And changing brands at this point would be futile. If oil consumption is due to premature wear of engine components then I'm sure that ChryCo would be obligated to repair your KJ under warranty. That said.... they may try to do whatever they can to NOT do the work. I do hope that your service records were kept up to date.

If you're up to it, do a cylinder leak down test to confirm worn pistons/rings. I have yet to see a naked 3.7 cyl head so can't really comment on oil passing through the valve stem seals and guides.

 

[ThunderbirdJunkie]

You say "some"
We need a quantifiable amount. 1qt every 3,000? 1/4qt every 5,000? All engines burn oil to a degree.

 

[k99jk99j]

You say "some"
We need a quantifiable amount. 1qt every 3,000? 1/4qt every 5,000? All engines burn oil to a degree.

i agree. how much are you using? the dealership won't do anything unless it is 1 quart every 800-1000 miles. mike

 

[belvedere]

I have yet to see a naked 3.7 cyl head so can't really comment on oil passing through the valve stem seals and guides.

He doesn't have the 3.7.

 

[ptsb5a]

He doesn't have the 3.7.

Touche. Haven't seen the 2.4 head either!

 

[jnaut]

You say "some"
We need a quantifiable amount. 1qt every 3,000? 1/4qt every 5,000? All engines burn oil to a degree.

And by burn, do you mean 'burn' or just loss? Like are you seeing smoke from the tailpipe?

 

[kckj]

I guess i shouldn't hav used the word "burn".
consumption is correct, and i am going through roughly 1 qt. every thousand. give or take.
I've been using factory weight 5w30 full synthetic for 20-30k miles. I thought about switching visc. but after speaking with a friend that's a mech. by trade, he didn't advise doing so.

I have checked out that website in the past ref. oil and oil filters. Lots of good info on it. thanks.

I have an appt for diag. I'm guessing they do some sort of a dye or something in the oil, then check to see where the problem is? I don't know, uncharted territory for me.

Oh, and no blue smoke that i can tell when starting

You must be registered for see images attach

 

[osufans]

good luck. we had a similar issue on the chrysler 3.8 v6 in our town & country. 1qt of oil was disappearing between 800-1000 miles. no leaks, no smoke, just gone. they did the dye test, no leaks found. first they installed new rings.....and when that didn't do it, they took off the heads, inspected them, and installed new valve seals.

after it was still doing it, i happened to be tracing down a vacuum leak from that particular dealers crappy workmanship, and discovered the pcv valve was never re-installed correctly. i believe that may have been the culprit the whole time. not sure how the 2.4 PCV goes in...but you may want to make sure it is seated properly and not still the issue.

 

[Marlon_JB2]

As long as you can produce proof of proper maintenance, which I'm sure they will ask for, then yes they have to fix it.

 

[brucebotti]

I would be willing to bet that they will say a quart of oil every 1,000 miles is "normal". I had an oil consumption test done at a dealer years ago for my wife's minivan. They topped off the oil and then put a seal on the dipstick, oil filter, and oil drain. They said to come back about the time it would be down a quart, which was about 250 miles. They did consider 250 miles excessive, and rebuilt the motor.
Bruce

 

[k99jk99j]

I've been using factory weight 5w30 full synthetic for 20-30k miles.

you would not be the first person to start using oil after switching to synthetic. have you thought about switching back to 5w-30 conventional.

 

[jcbll95]

I have 148000 on my 2.4 and use 1 to1.5 quarts every 3000 and i use conventional oil.

 

[jnaut]

you would not be the first person to start using oil after switching to synthetic. have you thought about switching back to 5w-30 conventional.

I believe this theory has been largely debunked.

 

[jnaut]

good luck. we had a similar issue on the chrysler 3.8 v6 in our town & country. 1qt of oil was disappearing between 800-1000 miles. no leaks, no smoke, just gone. they did the dye test, no leaks found. first they installed new rings.....and when that didn't do it, they took off the heads, inspected them, and installed new valve seals.

after it was still doing it, i happened to be tracing down a vacuum leak from that particular dealers crappy workmanship, and discovered the pcv valve was never re-installed correctly. i believe that may have been the culprit the whole time. not sure how the 2.4 PCV goes in...but you may want to make sure it is seated properly and not still the issue.

Educate me here. Why would an improperly installed PCV valve cause oil loss with no evidence of leaking or burning?

 

[ridenby]

Little background:
I have a 04 Liberty sport with the RARE 2.4L 4X4. Hard to find any of these around. Anywho, started burning some oil around 55,000 miles. It has 65,00miles on it now.

So I called, and I am still under the powertrain warranty. How much time and money do you suppose they are they going to spend fixing this problem. I have already changed the pcv valve 5k miles ago. Didn't help.

Worse case scenario, Oil consumption around valves or pistons. That kind of work would almost be worth more than the vehicle. But are they REQUIRED to FIX it under warranty?

Thoughts??

I will give you $2500 for that oil burning hunk of junk

 

[sleeve]

Typicaly R&R on an engine should be around $5000.0+ if you are paying out of your pocket. Time taken for the job depends on where you go and how much quality you want to pay for.

Without receipts of all maintanence of the vehicle, you might have to cover a portion of the cost for the project.

Also, if your KJ is paid for it will be more cost effective to replace the bad parts and continue driving your Liberty than spend $20K on a new vehicle. Show me a vehicle that has the same capability, milage, etc as the KJ for your the same amount listed on your repair bill and I'll change my tune. Until then, it's best to fix the KJ.

 

[osufans]

Educate me here. Why would an improperly installed PCV valve cause oil loss with no evidence of leaking or burning?

I'm not sure the specifics, but I know it can be an issue (check out a Mazda 6 forum...the previous gen was notorious for blowing motors due to a stuck open PCV valve.)

I'm guessing that somehow the vacuum on the PCV valve siphons off oil from the block. I've heard that this shouldn't be an issue if there is a splash guard to prevent oil from flinging up to the PCV, so I guess it all depends on the design of the motor. But yeah, when working properly, there is basically a vacuum hose attached to the valve cover that ***** unburnt gases and air out of the cover and in to the intake, which is then burned through the motor.

Oh, and per Chrysler, for an engine over 50K miles, it is considered "within limits" to burn 1 qt every 750 miles. Under 50K is 1 qt every 1000 miles.

 

[ThunderbirdJunkie]

Not to mention the KJ CRDs nearly require the PCV to be deleted