Hi foks, I have noticed recently that everytime I get into the car (after leaving it a while or overnight) I notice a distinct 'oily' smell - can't describe any better. Of course, as you get used to it, you don't notice it after a short while until the next time you leave the car for a bit.
Could it be something to do with the Cabin Filter?

Might be worth checking the area by the red arrow, common problem to drip oil here through the base of the joint, though not heard of it producing an oil smell in the cabin, may depend on the quantity though. Fix for the drip is to use a jubilee clip instead of the silly spring clamp they use.

 
Hung like Einstein, smart as a horse.

After a decent drive whip the engine cover off and check on top of engine around the injectors for pooling diesel. Fumes from this cooking off and coming into cabin from leaking fuel return pipes doesn't smell good.

Cheers guys! a couple things to investigate ......

Check sealing gromit at base of steering wheel. If it comes loose it is a frequent culprit of unwanted noise and smells.

https://www.freel2.com/forum/topic10559.ht...ring+wheel FL2 XS SD4 Auto 2010 2012-2017 (21k - 91k miles) (MY2011)
FL2 Metropolis SD4 Auto 2014 2017- (16k - 77k+ miles) (MY2015)
Metro in its 11th Year of (Extended) LR Warranty / Full LR Service History
(Expensive, but Trouble/Worry free - hopefully?)