Engine Oil Leaks

When diagnosing engine oil leaks, the source and location of the leak must be identified prior to service.

FLUORESCENT OIL ADDITIVE METHOD
1. Add Rotunda Gas Engine Dye 164-R3705 or equivalent to the engine oil. Use 29.6 ml (1 ounce) of the fluorescent additive in all engines.
2. Clean the engine with a suitable solvent to remove all traces of oil.
3. Run the engine for 15 minutes.
4. Stop engine and inspect all seal gasket and galley plug areas for leaks using Rotunda 12 Volt Master UV Diagnostic Kit 164-RO756 or equivalent. A clear bright yellow or orange area will identify leak. For extremely small leaks, several hours may be required for the leak to appear.

5. Note: For minor gasket leaks tightening the retaining bolts may resolve the problem.

Service all leaks as required.

LEAKAGE POINTS

Underhood
Examine the following areas for oil leakage:
^ Valve cover gasket
^ Crankcase ventilation grommet
^ head gasket
^ oil bypass filter
^ oil filter adapter gasket
^ Oil level indicator tube (dipstick) connection
^ Oil pressure sensor

Under Engine, With Vehicle on Hoist
^ Oil pan gasket.
^ Crankshaft front seal.
^ Crankshaft rear oil seal
^ Oil pressure sensor.

With Transmission and Flywheel Removed

Note: Inspect for leakage in the area around the crankshaft rear oil seal and flywheel bolts. If the leakage is from the flywheel bolts, apply Pipe Sealant with Teflon(R) D8AZ-19554-A or equivalent meeting Ford specifications WSK-M2G350-A2 and ESR-M18P7-A to the threads and tighten to specification.

Note: Light leakage equally around valve cover bolts and crankshaft seals is not detrimental; no repairs are required.

Check the following for oil leaks:
^ crankshaft front seal.
^ crankshaft rear oil seal
^ crankshaft rear oil seal retainer gasket.
^ Oil pan gasket.
^ flywheel bolts.
^ oil gallery plugs at the end of oil passages.
^ inspect all cast parts for leakage due to porosity.