Just a bit of FYI

Blue smoke = oil
Black smoke = fuel
White smoke = water

Common causes of white smoke:
- Issues with turbo, getting water into intake
- Blown/leaking head gasket, getting water into cylinders
- Corrosion in heads, again getting water into cylinders

So in short, no it is not oil and wouldn't have anything to do with the oil change. However, it is an issue and still worth having it looked at.

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