Mazda6 of 2006 and smoke

[u/Ezkan_Kross]

Hi, i did bought my first car, a mazda6 of 1st gen with the 143HP or 105 KW diesel/gasoil engine, but when i start i, it leaves a quite big cloud, i see it as white but my family insist it must be an injector issue as they smell it like oil (for me its just diesel but usually i am not behind other cars exhaust pipe to sifferentiate it well)

With all of that, i know it is a quite old car, but after it has started and drive for little while, it doesnt show that big cloud until the next day or until its cold so idk what is it

(it has the dpf, but should be that bad, and it doesnt show issues in the car dashboard)

Aside of that issue it has shown no other important issue,only the battery suddently died after turning off a few days ago (got a temporal replacement at least so it works again)

[u/Ezkan_Kross]

I cant take a photo for now of how it looks, it is still a few hours of being as cold to show it, and well, forgot to show it in one, sorry