Oil leak

[Gary Bramall]

Good morning! I thought I had an oil pan gasket leak but upon inspection I think it is coming from something in the front left(drivers side). Is this the oil pressure sensor or something else? And is it an easy fix?

Thanks so much!!

 

[Fast69Mopar]

From the picture it appears that we are looking at the crankshaft position sensor on a Cummins. Is that correct?

 

[Gary Bramall]

It is a Cummins. I don't know what it is but it is leaking oil. I'll search to see if it is a crankshaft position sensor. Thanks

 

[HemiLonestar]

Wouldn't be coming from the sensor, that reads the tone wheel on the dampener and doesn't go through anything with oil. What's that behind it?

 

[Fast69Mopar]

The oil that is on the crankshaft position sensor could be coming from the front crank seal in the timing cover or possibly from the oil pan gasket. I would clean the oil off with a rag and some brake cleaner and monitor the situation.

 

[Marley]

Try a high mileage oil like Valvoline max life.....dried up my garage floor.

 

[LoneWolf3574]

Try a high mileage oil like Valvoline max life.....dried up my garage floor.

NEVER use high mileage oil. They "rehydrate" seals and might be great to start with but they never quit, you end up with worse oil leaks than you started with later on down the line.

Plus he's got a Cummins, I am pretty sure that they don't make high mileage oil for diesels.

Sent from my LG-H830 using Tapatalk

 

[Marley]

NEVER use high mileage oil. They "rehydrate" seals and might be great to start with but they never quit, you end up with worse oil leaks than you started with later on down the line.

Plus he's got a Cummins, I am pretty sure that they don't make high mileage oil for diesels.

Sent from my LG-H830 using Tapatalk

Hmmm, your the first I've heard tell such.
Put it in my 4.0 several years ago and stopped a rear main leak so I dubbed as good stuff.

 

[Fast69Mopar]

I definitely would not use a typical high mileage oil in a Cummins motor with an oil leak. If it was just weeping or seeping then it can potentially make it worse and into a full on leak. The additives in high mileage oils revive hard seals but the problem with that is it can revive the seal so much that it gets softer and softer causing an even larger oil leak. I suggest using a good quality oil designed for your specific application. I switched both of my Cummins engines from 15W-40 to 10W-30. The lighter weight oil helps with oil flow during cold starts and can potentially give you a small boost in fuel economy due the reduced drag of the heavier weight oils.