Dodge Nitro. Manual — part 129

6. Remove oil pan drain plug from crankcase and allow oil to drain into pan. Inspect drain plug threads for

stretching or other damage. Replace drain plug and gasket if damaged.

7. Remove oil filter (2). See Fig. 242.

8. Install drain plug in crankcase. Torque oil pan drain plug to 27 N.m (20 ft. lbs.).

9. Install new oil filter (2). See Fig. 242.

Fig. 243: 4.0L ENGINE
Courtesy of CHRYSLER LLC

10. Lower vehicle.

11. Fill crankcase with specified amount and type of engine oil. (Refer to ENGINE OIL )

12. Install oil fill cap. See Fig. 243.

13. Start engine and inspect for leaks.

14. Stop engine and inspect oil level.

OIL FILTER SPECIFICATION

All engines are equipped with a high quality full-flow, disposable type oil filter. When replacing oil filter, use a
Mopar® filter or equivalent.

USED ENGINE OIL DISPOSAL

Care should be exercised when disposing used engine oil after it has been drained from a vehicle engine. Refer
to the WARNING above.

COOLER-ENGINE OIL

DESCRIPTION

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro

COOLER-ENGINE OIL

Fig. 244: Engine Oil Cooler, Coolant Hose, Filter & Lower Radiator Hose
Courtesy of CHRYSLER LLC

The engine oil cooler (1) is a oil-to-coolant type and is mounted between the oil filter and the oil pan.

OPERATION

COOLER-ENGINE OIL

Engine oil travels from the oil cooler and into the oil filter. Engine oil then exits the filter into the main gallery.
Engine coolant flows into the cooler from the heater return tube and exits into the water inlet tube.

REMOVAL

REMOVAL

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro

Fig. 245: Engine Oil Cooler, Coolant Hose, Filter & Lower Radiator Hose
Courtesy of CHRYSLER LLC

1. Drain cooling system.

2. Raise vehicle on hoist.

3. Disconnect coolant hose (3) from oil cooler (1).

Fig. 246: Removing/Installing Oil Cooler & Coolant Hoses
Courtesy of CHRYSLER LLC

4. Disconnect coolant hoses (2) from oil cooler (1).

5. Remove oil filter.

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro

6. Remove oil cooler attaching fastener from center of oil cooler.

7. Remove oil cooler (1).

INSTALLATION

INSTALLATION

Fig. 247: Removing/Installing Oil Cooler & Coolant Hoses
Courtesy of CHRYSLER LLC

1. Position oil cooler to fitting on oil pan.

2. Install oil cooler (1) attaching fastener and tighten to 61 N.m (45 ft. lbs.).

3. Install oil filter and tighten to 12 N.m (106 in. lbs.).

4. Connect coolant hose (2) to oil cooler (1).

NOTE:

Remove all oil and debris from the seal retainer surface. The cut out
section of the oil cooler seal retainer flange (top), must be aligned with the
tab on the oil pan. The oil cooler must be prevented from turning during
the tightening sequence.

2007 Dodge Nitro R/T

2007 ENGINE 4.0L - Service Information - Nitro