Q: i have oil leaking from the upper drivers side of my transmission bell housing cannot figure out where it is comming from

asked by on

leak is comming from drivers side upper bell housing of transmission i do not see any leaks from head gasket, valve covers or intake.

also no leaks from rear main or front main cannot figure this one out.

truck has alot of miles but runs and drives great.

can some one tell me why the truck leaks oil in this area?

and i thank you for any reasonable response.

It would be difficult to suggest where this oil leak may be coming from without seeing the vehicle. With that said, the fastest way to diagnose this is to thoroughly de-grease the entire area where you suspect the leak originates, put UV dye in the engine oil, run the car for a short while (briefer is better because you don’t want the leaking oil to "travel" too far from the site of origin, thus making the origin harder to "find") and use a UV detection light to identify the fault. The dye of course will light up under the lamp. Just trace the track that the dye has followed to find the origin. If you need assistance, a certified YourMechanic technician can come to your location to help inspect your vehicle’s oil leak and diagnose this issue.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. i have oil leaking from the upper drivers side of my transmission bell housing cannot figure out where it is comming from

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: Losing a lot of oil and not from leaks

Hello! Thank you for writing in with this question. Typically, the standard in the automotive industry is that an engine burning 1 quart of oil every 1000-1200 miles is “normal.” Anything else would be excessive. Due to the nature and...

Q: Loosing power. Engine won't crank

Hi There, If you have a good battery and starter, the clicking is likely from the battery not getting enough power to the starter motor. This is caused by the battery cables not making good contact to the battery or...

Q: Excess Vibration Front Wheels; knocking sound when going over bumps

What you are describing sounds like a failing CV joint. A CV (Constant Velocity) joint is a shaft that connects the transmission to the wheels, essentially transferring the power from the drive train directly to the wheels. The CV joint...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...