99 freightliner problems

I promised an update So that problem kicked in again last night I was loaded grossed at 80 the popping and smoking got real bad north of Effingham and eventually I was only able to get her up to about 45 mph smoking and chugging like crazy. Clean and check every sensor and plug I could find didn't do anything so I parked. I was unable to drive today as it was doing it in even low gear. I checked every opening to the turbo and even removed the valve cover as there was oil seepage from the rear of it. Everything looked fine. Went to a shop for a service and they found metal flakes in the bottom of the filter closest to the cab and even more and some oil in the on connected to the fuel pump. No odd or disrupted idle even he said it sounded smooth. With fresh filters I test drove it and it ran like it should no smoke no popping and feels powerful. So obviously there's a problem starting with the fuel pump then observe filters for contaminants. Thought I'd update and see if anyone has thoughts on this

 

Lol agreed I've been through to many sketchy shops!! I did see them with my own eyes and yeah I shook me a little!! Ive never actually poured out a filter and explored its contents so It bothered me thinking on know my truck is going to blow up after rebuilding the #### thing last march!! So I'm going to keep a closer eye on it and maybe inspect my filters more thoroughly.

 

Just curious because I'm not to educated in this type of stuff and I try to learn all I can. Is shavings in the fuel filters a normal thing? Or is seeing them myself a reason to proactive and this.

 

It was in the filter under the fuel pump didn't notice really anything in the second one. Definitely a possibility to have been poured in to filter but idk he didn't try to get work out of me. He suggested changing pump ad flushing system but wasn't trying to talk me into it or schedule anything so I'll monitor filter and act as needed. Day two and she seems to still be running hard and idle still smooth soooo we'll see

 

Just a question on replacing my fuel pump. Should I stay with detroit parts or is aftermarket safe to use on something so important