At 100k miles it is time to replace the fuel filter. It is pretty easy to do, just pay attention to how the hoses release by pushing in at certain spots on the connector to not break them.
Yes you need to change the fuel filters every 15k or so at the tune of $55 bucks if you DIY and sure they will be more expensive to repair, but with routine maintenance on my 6.7 I’ve owned since 2018 I have not had a single issue with it.
Plastic ones made by Wix or similar brand are good, wouldnn't recommend cheap no-name ones, no guarantee that the plastic in those is suitable. Wix/similar are not a firehazard if fitted properly.
use the mopar factory filters
I have a 1995, f150 and the fuel filter is 7 dollars so I dont know where you guys are or what kind of trucks you have but here in Ontario where I live at my parts store like I said 7 dollars
go to any auto shop and ask for a fuel filter for a seventies Volkswagen beetle.
I went with mahle from fcp, job is easy the only thing I can bitch about is the metal plate covering it
The little plastic filters. My local shop that specializes in German cars, especially old air cooled ones, said that the cheap plastic ones are the best to use. They are cheap and also don’t fail like the glass ones.
We do have additives / blended fuel during the winter at the pumps in Canada so you don't really need to worry but last winter I did get stuck because it was so cold for 2 days straight (over the weekend) and I didn't start the car till Monday that the fuel gelled up in the filter.
I opened the Fuel Filter Housing up and noticed the Bosch Fairy had stopped by and littered my system with metal fairy dust. I dropped a magnet into the housing and pulled out plenty of extremely fine metal dust.
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