Is this an oil leak? - Help

Hello I’d like to see if this is an oil leak / transmission leak. Oil pan seems pretty damp but no leaks on pavement. Truck has 270k miles. Seller said they had to replace the oil pan but not sure if that’s covering the actual problem. Any help is appreciated

 

Since it's not dripping on pavement yet, I consider it an oil seep, but that's a nice warning that a leak is right around the corner sooner or later. Looks like it could be a combination of oil seeps from the oil pan paired with something else seeping out that's located higher than the oil pan from the looks of that trail of residue.

 

What else could it be? Hmm

 

Might be your rear main seal. If that is leaking it typically leaks out from under the inspection cover between the bell housing and the rear of the oil pan.

 

Looks like the rear main. Mine has a stain in that same spot. It's not getting bigger so I'm not worrying about it yet

 

sure as hell have something leaking

 

Probably rear main seal. Oil pan leak wouldn't travel upward that far.

 

Pop open that plastic cover, will be very noticeable if rear main seal leak

 

Wash it down, clean it up then check it after 500 miles. It'll become evident by then where the oil is coming from.

 

This^^^^^

 

I have the exact same problem on my 2017 V6. I fear its a rear main seal. The left side under the cover is 'wet'. ;-((

 

Will do so, that plastic cover is a bit loose

 

I had a small leak threw a bottle of blue devil rear main seal repair and leak is gone.