I have a 2008 with 75,000 miles. Motor was replaced (short block) at 35,000 for oil consumption. At that time, they told me the oil consumption standard was 1/4 a quart every 1,000 miles. Mine was burning around 1 quart every 500 miles.

It's burning oil again and was down over 3 quarts at around 3,000 miles. Now we're in the oil consumption test again and it burned about 1/2 a quart in 600 miles according to them. I suspect it was over filled at the oil change but not sure right now. Same dealer who did the engine change is suggesting that the current standard is 1 quart every 1,000 miles. I've read some of this online and but nothing official. It didn't burn any until recently and has around 35,000 miles on this motor. Basically, it got to the same age and the same thing started happening.

Please let me know if any of you are aware in a change in the oil consumption standards per what the dealer is saying.

 

I'm in the middle of my 2nd test for my 2010. My dealer is telling me that Chrysler says that 1 quart per 1,000 is normal. By that logic you will run out of oil before your due for an oil change! I read on here one guy got a new motor after telling that because he was at the 1 for 1 limit and refused to fix it.

 

I remember being told that 1/4 per 1,000 miles was the standard. Does anyone have that information? If they changed the standard then that would be relevant to the discussion (i.e. they just changed the standard rather than fix the problem).

 

I've never heard of the 1/4 quart per 1,000 miles standard. As far as I know it's been 1 quart in 1,000 miles for a very long time.


Here is what Chrysler has put out for a long time regarding the oil consumption issue: (scroll down about half way for a later service bulletin.)

Vehicle Issue

Suspected excessive engine oil consumption, burns oil, uses oil, with no leaks found.
Applies to most Chrysler Corporation models unless otherwise specified.
Excessive engine oil usage or consumption suspected.
System or Component Abnormal Behavior / Function,Consumption / Oil Level Low But No Leak;Customer Concern (No DTCs);Engine Oil

Recommendation

NORMAL OIL CONSUMPTION:
Below are industry standards for normal engine oil consumption:
Mileage below 50,000: Normal oil consumption is one quart for each 1,000 miles driven. Mileage above 50,000: Normal oil consumption is one quart for each 750 miles driven.

TEST TO DETERMINE ENGINE OIL CONSUMPTION:
Operate engine to normal operating temperature.
Fill engine oil precisely to FULL mark on dip stick gauge.
Use paint pen to mark the engine oil drain plug to prevent tampering.
Check engine oil level after 1.000 miles driven.
Refer to normal engine oil consumption listed above.

POSSIBLE CAUSES FOR EXCESSIVE ENGINE OIL CONSUMPTION:

PCV OR CCV SYSTEM:
Check the crankcase ventilation system for proper operation. Oil may accumulate in the throttle body or intake manifold. Also, rocker arm lubrication oil flow returns to oil pan through drainback holes in top of cylinder head. Plugged or restricted oil drainback holes may contribute to excessive oil in crankcase ventilation system.

SPARK PLUGS:
Examine all spark plugs to identify the affected cylinder(s). Spark plug on the affected cylinder(s) will usually be fouled or wet with engine oil.

VALVE GUIDES AND VALVE STEM SEALS:
Inspect valve guides on the affected cylinder(s). Replace valve stem seals on the affected cylinder(s).

PISTON RINGS:
Check piston rings on the affected cylinder(s). Piston rings may be too tight / worn / broken / carbon build up in the oil control ring.

CYLINDER WALL:
Examine the cylinder wall on the affected cylinder(s). Cylinder wall may be severely scuffed. Perform hone procedure on the cylinder wall or replace cylinder block / short engine assembly as required.


Modification Date 08/25/09 10:44 AM



In 2012, they came up with this service bulletin:


Service Bulletin NUMBER: 09-001-12
GROUP: Engine
DATE: June 27, 2012
SUBJECT: Engine Oil Consumption Guideline

JEEP MODELS INCLUDED:
2012 - 2013 (JK) Wrangler
2012 - 2013 (J3) Wrangler (CKD)
2012 (K1) Cherokee (CKD)
2012 (KK) Liberty
2012 - 2013 (MK) Compass/Patriot
2012 - 2013 (W2) Grand Cherokee (CKD)
2012 - 2013 (WK) Grand Cherokee

NOTE: This bulletin applies to all Chrysler Group LLC vehicles equipped with
gasoline engines, except SRT and Viper models or vehicles equipped with
Diesel engines.

Oil Consumption
The accepted rate of oil consumption for engines used in the vehicles listed above is 0.946 liter (1 qt.) in 3,200 km (2,000 mi) for the 1st 80,467 km (50,000 mi). For vehicles with more then 80,467 km (50,000 mi) the acceptable oil consumption for engines is 0.946 liter (1 qt.) in 1,207 km (750 mi).
CAUTION: This above rate only applies to personal use vehicles, under warranty, that are driven in a non-aggressive manner and maintained in accordance with the appropriate maintenance schedule,
CAUTION: This rate does not apply to vehicles that are driven in an aggressive manner, at high RPM, high speeds, or in a loaded condition (for trucks).
See ‘Causes for Oil Consumption’ below. Oil consumption for vehicles driven under these conditions will be higher and may include Fleet and Commercial customers.
There are many factors that can affect a Owner's concern with oil consumption. Driving habits and vehicle maintenance vary from owner to owner. Inspect each condition listed below prior to determining if the vehicle in question has abnormal engine oil consumption.
If abnormal oil consumption is suspected, refer to the detailed diagnostic procedures available in DealerCONNECT> TechCONNECT under: Service Info> 09 - Engine> Diagnosis and Testing - Oil Consumption Test And Diagnosis.

Diagnosis of Oil Consumption:
Gasket and External Leaks
Thoroughly inspect the oil pan and engine intake manifold for leakage due to over tightened, damaged, or out of place gaskets.
Oil Leaks
Inspect all oil lines and fittings for signs of leakage. Verify Oil filter is at proper torque and Oil Filter gasket is not out of place.
Improper Reading of the Oil Level Indicator on Dipstick
Verify that the dipstick is fully seated in the tube. Verify the dipstick tube is fully seated in the engine block. When checking the oil level, make sure the vehicle is on a level surface and the dipstick is wiped clean before taking an oil level reading and fully depress the dipstick until the shoulder bottoms out on the dipstick tube.
NOTE: The dipstick must be the proper part number for the engine/vehicle that is being checked.
CAUTION: Operating the vehicle with an oil level that is below the minimum level indicated on the engine oil dipstick can result in severe engine damage.
Repairs resulting from operating an engine with insufficient oil are not covered under the terms of the New Vehicle Warranty.
Some engines require more time than others for the oil to drain back into the crankcase.
The vehicle should be allowed to sit for at least 15 minutes, after the engine has been shut off, before taking an oil level reading. To ensure an accurate reading, the temperature of the oil should be close to the same temperature as the last time the oil level was checked.
Under or Over Oil Fill after an Oil Change
After an oil change, verify that the proper amount of oil was put in the engine and that the oil level on the dipstick is not above the full mark or below the add marks. Refer to the Owner Manual or Service Information for information on recommended oil quantity.
Correct Oil Type
Verify the vehicle has the correct oil. Refer to the Owner Manual or Service Information for information on recommended oil viscosity, and quality.
Crankcase Ventilation System
Verify that the positive crankcase ventilation (PCV) system is operating properly. Blockages, restrictions, or damage to the PCV system can result in increased oil use.
Oil Dilution (Fuel and Water)
On vehicles that are normally driven short distances, less than 8 km (5 mi), especially in colder weather, unburned fuel and condensation generated from cold engine operation may not get hot enough to evaporate out of the oil. When this occurs, the dipstick may indicate that the oil level is over-full. Subsequent driving on a trip of sufficient length to enable normal engine operating temperature for 30 minutes or more, in order to vaporize excess moisture and fuel, may give the customer the impression of excessive oil consumption.

Causes for Oil Consumption:
Aggressive Driving
Aggressive driving and/or continuous driving at high speeds with high RPM's will increase oil consumption. Because this may not always be an everyday occurrence, it is hard to determine exactly how much the oil economy will be affected. A higher rate of oil consumption is normal for vehicles equipped with manual transmissions that are driven aggressively. Aggressive means; operation at high RPM (3,000 RPM to redline), with frequent use of engine braking (using the engine to slow the vehicle). Vehicles that are driven aggressively may consume engine oil at a rate of up to 0.946 L (1 quart) every 805 km (500 mi). This is normal for a vehicle that is driven aggressively. No repair is necessary. This driving habit will require the owner to check the engine oil level at frequent intervals, to verified the oil level remains within the recommended operating range. Oil level should be checked every time you get fuel.
Towing or Heavy Usage
Towing a trailer will increase oil consumption and may cause oil consumption to fall below the normal accepted rate referenced in this bulletin for an unloaded vehicle in a personal use application. Large frontal area trailers will further increase the work required from the engine, especially at highway speeds increasing the rate of oil consumption.
Engine Wear
Piston scuffing, excessive piston-to-wall clearance, tapered or out of round cylinders, worn, damaged or improperly installed valve guides, seals and piston rings will cause an increase in oil consumption.
Engine Temperature
If an engine is run at overheated temperatures for more than brief periods, oil will oxidize at a faster than normal rate. In addition, gaskets may distort, piston rings may stick, and excessive wear may result. Verify that all cooling system components are in proper working order.

 

What my dealer told me is consistent with this. I used over three quarts in 1600 miles and took it in. They made me do an oil consumption test (1000 miles). Jeep then took about a month to run the dealer through a a bunch of tests before deciding to tear it down and recommend changing rings and one piston. Dealer wanted to do a short block but Jeep refused. After a week of being stalled by Jeep's so-called customer assistance line (recommended by the dealer) I have found that there seems to be no way to appeal the idiots at jeep so I'm about to call the dealer and tell him to go ahead. They wore me down: including the oil consumption test time, they've had my Jeep basically unavailable for going on two months now and I need it. Not sure I'll ever be able to trust this vehicle again on long hauls away from civilization. Maybe I'll buy a Toyota or Ford Truck and trick it out.

 

Ive been a Chrysler service manager 16 years and their standard is 1 quart/1,000 miles.......

 

That's fine, but according to Chrysler's publications, for vehicles with more than 50,000 miles, it's 1 quart in 750 miles.

 

If this vehicle has lifetime Powertrain or if the Long block is covered by the Mopar powertrain for a longblock/shortblock assembly replacement and it has 35,000 miles on it according to the OP, I would still warranty it for using 1 quart/1,000 miles.....