What is this canister on passenger side?

[dog2bert]

What is this canister on passenger side? Is it leaking or it the leak from above?

[Tbonem3]

VANOS accumulator. You could replace the copper crush washers on banjo fitting.

CPV or euro plug is sort of near by and often leaks, but it's further back and I wouldn't expect oil to travel forward.

Only thing above there is coolant. Though I guess your oil pan gasket could be leaking there as well.

If you haven't yet replaced your vanos line with the updated part, now would be a good time and you can put new washers in.

[dog2bert]

What is the euro plug? Or is that just another name for the CPV?

[Tbonem3]

ya