Hi all need some help figuring out my oil leak. First cold weather here in Brooklyn NY I noticed a puddle of oil under the back of the engine where the drive train connects to the engine (I think). Took to Pepboys, they said that they changed the gaskets and tightened them, changed oil and oil filter. There was no leaking by the filter or the pan, nor could I see any oil leaks on top of the engine or the sides. Took it home and the next day saw the same puddle. Another note, when I drive I can smell burning oil from the vents/heater/ac. Don't see any smoke just smells very badly. I've attached a photo of where it's puddling under the car. Any ideas or direction would be helpful. I'm thinking I have to take back to Pepboys (really don't want to).

Thanks!

 

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