u/Civil-Vermicelli-603

Help?

Anyone have an idea? 2016 2.7 162,000 miles.
I'm getting very poor gas mileage ( averaging
10.9-11.9MPG). Also lacking a lot of power. Truck is very sluggish and doesn't want to go. No check engine light or pending codes. I tried new plugs (NGK Ruthenium HX) didn't seem to make a difference at all. I just cleaned my MAF sensors, and then replaced my MAP sensor and nothing. Couple days ago I noticed a weird rattle coming from what I thought to be the turbo wastegate on the driver side. Turns out it's the fuel lines? Never seen anything like it. New fuel pump in the tank last year, and new HPFP 2 years ago. I was also doing some maintenance a little while back and noticed my driver side turbo was covered in oil. There was no shaft play in the turbo and didn’t seem to have oil inside the turbo anywhere. I’m at a loss on what is happening here. Maybe it’s multiple problems here? Any help or advice would be appreciated.