DEFINITION: Evidence of fluid loss at or near the drive pinion yoke and/or on surrounding components.

The slip yoke barrel has burrs, or is nicked, corroded, or worn.

1. Inspect the slip yoke for burrs.

Minor burrs can be removed by careful use of crocus cloth or fine stone honing.

2. If the slip yoke is badly burred, corroded or worn, replace the yoke. Refer to Front Propeller Shaft Coupling Replacement .
3. Replace the transmission rear oil seal. Refer to the following:

•	Mainshaft Rear Oil Seal Replacement in Manual Transmission - Tremec 6-Speed.

•	Propeller Shaft Front Slip Yoke Oil Seal Replacement in Automatic Transmission - 4L60-E.

The transmission rear oil seal is worn or damaged.

Replace the oil seal. Refer to the following: