Skip the auto shop - Our mechanics make house calls

Q: Where the driver's shaft thing that spins is slinging oil when I drive, but if doesn't leak when my car is parked

asked by on

The drivers shaft has oil leakage on it and slinging it all under my car but the oil doesn't leak when Im parked so what could be making this leak and it makes a noise when I'm driving and when I press my gas pedal I hear a whine only when I press the gas do I hear the whining but the kind of grinding noise is constant when moving

My car has 172000 miles.
My car has an automatic transmission.

You don’t mention which end of the driveshaft is leaking oil, but in either case, the problem would be worn bushings or bearings that allows the driveshaft to "wobble" enough that the oil seal is leaking (the oil seal is probably worn out as well given your mileage). For the transmission, this would be a worn tailshaft housing bushing, which the driveshaft yoke slides in/out of.

For the differential end, a pinion bearing may be worn. Given the "whine" you mention under load, the ring and pinion gears, and bearings, in the differential are worn as well. Both the seal and bushing/bearing for the leaking end of the driveshaft need to be replaced.

You may also have a wheel bearing that is worn - that would cause the constant grinding noise you hear. In order to get this properly diagnosed, have a certified professional, like one from YourMechanic, inspect the leak and grinding/whining sound in person to pinpoint the needed repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  • Home
  • Questions
  • Where the driver's shaft thing that spins is slinging oil when I drive, but if doesn't leak when my car is parked

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Ford F150 burglar alarm goes off for no reason

Factory- installed and aftermarket alarm systems function in a similar manner. Factory systems may be easier to diagnose because often, the system is accessible with the proper scan and diagnostic tools. Almost like a fault code for engine performance can...

Q: oil type

You should only run the 5w20 oil in this engine. The oil passages in the camshafts are pretty small and can reduce flow if anything thicker is used. You should only try using good quality oil that is synthetic. If...

Q: How to replace the cam shaft sensor.

The camshaft sensor on this engine is mounted on top of the synchronizer in the front center of motor. The noise may be in the housing and not the sensor. The sensor can be removed from the synchronizer housing and...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.