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: I drove my car about 50 miles without the oil cap it started rattling and cut off and now it wont crank

Having driven that far with no oil cap, it is likely that the engine oil level ran low enough to cause engine damage, possible seizing the engine. If that is what happened, adding oil will not help once the engine...

Q: Manual transmission makes noises - 1994 Nissan D21

Hello. It sounds like you have a gear, bearing, bushing, or other rotating component issue caused by wear. At that mileage, really the thing to do is just simply rebuild the transmission which is not particularly difficult since it is...

Q: How do I turn on the exterior parking lamps?

The exterior lamp control is placed on the instrument panel, to the left of the steering column. To turn on the exterior parking lamps, rotate the control knob clockwise two notches, to the parking lamps icon. When the exterior parking...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.