Black smoke from exhaust pipe

Hi,

This sounds like you have a large amount of blow by. Here is a guide that talks about black smoke but the gas in the in the oil points to a larger engine issue:

https://www.2carpros.com/articles/engine-black-smoke

I would suggest running a compression check just to make sure you have a good engine. If not, then finding the excess fuel doesn't matter.

https://www.2carpros.com/articles/how-to-test-engine-compression

More than likely you have an injector issue over fueling which is where the smoke is coming from and it running poorly. However, if it washed the cylinder down then you will have an engine issue which should show up on the compression check.

Let me know what you find and we can go from there. Thanks