uss2defiant
Full Access Member
Hi all,
I recently inherited my wife's 03 Jeep liberty 3.7L since our recent nuptials a month ago.
I don't think she's been good at making sure there is sufficient oil in the engine,
The engine died on an early 2013 visit to me after dinner. Had to fill it up with almost 2 qt of oil. I've been reminding her ever since to check the oil. I couldn't do much as we were dating long distance.
Since it's under my care now, I've been trying to gauge the oil consumption.
Now, I say consumption here as I don't see any gray/blue smoke and there's no signs of oil leak on the road.
Unfortunately, just recently it's been averaging half a qt per 100 miles. :shocked:
This is from the past two weeks. I'm still gauging this to make sure this is correct. I've been refilling with high mileage synthetic blend oil. It was filled with regular synthetic oil during the last oil change.
The oil pan was replaced a few years ago.
I just replaced the PCV valve a week ago. There was some oil in the PCV hose. Nothing murky. I didn't get a chance to clean out the oil in the hose due to time constraint.
I did notice the PCV rattling the next day while the jeep was idling from a cold start. Not sure whether that's an indication of lots of blow by. I've only experienced this once. I haven't heard that rattling since.
This past weekend, I looked around under the engine after changing the serpentine belt after finding a huge split but couldn't find any oil leaks.
The jeep idles well at 600 RPM, no engine knocking, accelerates fine, throttle body looked clean.
The jeep is due for an oil change in a few hundred miles.
This is what I am considering doing first:
1. perform compression test.
going off the pressures references posted here
http://www.jeepkj.com/forum/f196/compression-test-38727/
2. inspect the spark plugs for wear and signs of burnt oil.
3. use some STP multipurpose motor treatment or seafoam before the oil change
4. perform another compression test after oil change.
My thought is that removal of sludge might possibly help this oil situation but it could be my naive thinking.
I am also considering using the UV dye technique to find this leak. Maybe it's a leak that occurs while the jeep is moving.
Maybe I should try an oil stabilizer/additive?
:emotions122:
:025:
Any thoughts/suggestions/comments?
Thanks!
I recently inherited my wife's 03 Jeep liberty 3.7L since our recent nuptials a month ago.
I don't think she's been good at making sure there is sufficient oil in the engine,
The engine died on an early 2013 visit to me after dinner. Had to fill it up with almost 2 qt of oil. I've been reminding her ever since to check the oil. I couldn't do much as we were dating long distance.
Since it's under my care now, I've been trying to gauge the oil consumption.
Now, I say consumption here as I don't see any gray/blue smoke and there's no signs of oil leak on the road.
Unfortunately, just recently it's been averaging half a qt per 100 miles. :shocked:
This is from the past two weeks. I'm still gauging this to make sure this is correct. I've been refilling with high mileage synthetic blend oil. It was filled with regular synthetic oil during the last oil change.
The oil pan was replaced a few years ago.
I just replaced the PCV valve a week ago. There was some oil in the PCV hose. Nothing murky. I didn't get a chance to clean out the oil in the hose due to time constraint.
I did notice the PCV rattling the next day while the jeep was idling from a cold start. Not sure whether that's an indication of lots of blow by. I've only experienced this once. I haven't heard that rattling since.
This past weekend, I looked around under the engine after changing the serpentine belt after finding a huge split but couldn't find any oil leaks.
The jeep idles well at 600 RPM, no engine knocking, accelerates fine, throttle body looked clean.
The jeep is due for an oil change in a few hundred miles.
This is what I am considering doing first:
1. perform compression test.
going off the pressures references posted here
http://www.jeepkj.com/forum/f196/compression-test-38727/
2. inspect the spark plugs for wear and signs of burnt oil.
3. use some STP multipurpose motor treatment or seafoam before the oil change
4. perform another compression test after oil change.
My thought is that removal of sludge might possibly help this oil situation but it could be my naive thinking.
I am also considering using the UV dye technique to find this leak. Maybe it's a leak that occurs while the jeep is moving.
Maybe I should try an oil stabilizer/additive?
:emotions122:
:025:
Any thoughts/suggestions/comments?
Thanks!
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