Try some at-205 to stop the smoking. If the seals aren’t torn, it will fix it up to make it a few more months or years without smoke. At this point you don’t have anything to loose. It stopped my batMobile from smoking when I had a 100k 4.8i.

I also had luck with Lucas calming the smoke. Do not use brake fluid. All of these seal softeners are a band aid, but a cheap way to keep it going a while. I also use it on my f450 powerstroke, with 326k miles. It was leaking oil from the oil pan and cooler, constantly dripping, some at205later and it’s dry.