Skip the auto shop - Our mechanics make house calls

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?

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • 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: Truck won't start.

You will need to check the power resistor wires to the starter relay to see if they were burned in two. This is the most likely cause when the starter is shorted.

Q: Why does my thermostat not read anything on dash board 1994 Dodge Ram

Hello. If the gauge does not move at all even when the vehicle is turned off and on then the gauge is bad. If the gauge cycles but then does not move when the vehicle is turned off and on...

Q: Smog pump making noise

Hi there. You’re on the right track. When the belt is off, spin each part by hand and try to reproduce the noise. Use a drill if you are uncertain at slow speeds. Whichever part is noisy, usually needs replaced....

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...