Smoke!!!

[Anubisxc70]

2004 XC70 D5 awd.

Hello....
2 weeks ago i have changed my inter-cooler, the radiator, cleaned the egr m and replaced the hard pipe under the car. Cleaned the turbo with the Wynns spray turbo cleaner.

The car is behaving like a new car it pulls very well , like it never did. But i have been noticing that it smokes, in the beginning i saw more on hard pull, now i see it smoke more, not only on hard pull.

My uncle behind the car said its a grayish blue smoke, from the mirror looks black but.....
Its not always, sometimes you pull hard and it doenst. Sometimes on low acceleration does it. From start to take off it doesnt.

3 weeks ago i have tested the injectors (leak back test) and they were very good. I have the poping noise from the oil cap, and my oil deep stick hole smokes also like poping but it looks more water vapor than SMOKE. The glove on it doesn't blow stays normal... i know that D5 has oil separator not pcv but i did it anyway for some of you that are obi ones on this matters.
I have sprayed brake cleaner on the intake pipes, less the one that goes to the turbo and not a change on rpm .....


The car behaves very well , not burning oil, consumption is normal, no rough idle.....

Before this changes, only smoked sometimes on HARD acceleration. All the radiators were tested they are new.

Any ideas. Many thanks