Would these symptoms be indicative of a turbo oil seal on it's way out..?

No smoke on start up when cold start, but if the engine is left to idle before getting fully warmed up after 30 seconds or so there's some smoke (seems blueish, but there's not enough to be sure), Once fully warmed there's nothing at all..!?

No smoke on boost, plugs are clean and dry (after 12k).

My theory is that there's possibly some seepage into exhaust housing that only seeps when the turbo is warmish and not hot or cold IYSWIM..?

However, the engine isn't using any oil, so am I being paranoid and this is just because the engine hasn't warmed up properly. Don't normally let the car idle, just get in and drive it until it's warm, so this could have always been there..!

Decatted BTW..

 

Interesting site/info: 8:

Midland Turbo

IIRC the VF35 is unserviceable..!?

 

Its best to warm it up by driving it anyways.
Also if you leave it idling, it can dammage the oil seals in the turbo, when you idle you have no back pressure which can cause oil to leak out the oil seals.

 

I've never warmed a car up by sitting idling, usually get in and drive until it's properly warmed up ~5miles, even if I'm only going 2-3 miles..

Just recently however, we drove ~1 mile and pulled up whilst wife ran into shop, leaving engine idling, hence me noticing the smoke. I'm now looking for it, yet for all I know it could have always been there, especially as I run a full decat..!

Hopefully I'm being the typically paranoid scoob owner and it's nothing..