Diesel truck fuel filters

How often does everyone change them?

Every other oil change for me.

15,000 miles

I use Mobile 1 and change oil, fuel filters & roate tires every 15,000 miles. I use to do every 10,000 but I think the oil is holding up ok at 15,000.

I put FASS fuel systems on all of my diesel trucks. There are open fuel filter deletes available. Higher micro filtration better water separation and fuel pressures FASS states 25k I typ hit 15-18k Rotating tires at 5-6k. At 15k I would have to run to 20-25 and just by 2 new ones w/o wt rear tires get most wear from torque.

Eelpoutguy wrote:

Every other oil change for me.

X2

I also buy the smallest micron size available

If you take 15,000 miles and divide by 60 mph you get 250 hours.
On all our work pick ups and semis we change at 15,000 miles.
On all our equipment we change at 250 hours.
We change engine oil and both oil and fuel filters at those intervals.

and I do it when my truck dummy light tells me.

20-30k and the first stage filter still looks like new.

Rotella T6 synthetic oil change is 15 qrts of oil every 15k miles.
Fuel filter every 30k for me but I have went 50k plus oil the fuel filter before without any noticable issues.

Fuel filter I would change every 15k like Ram recommends. It was such a PITA to switch both filters I sold the truck at 45k miles. I did hear Ram on the 2025 changed the location and the filters and type so they are a little more user friendly.

My 2003 F350 Lariat 7.3 crew cab dully 4X4 with about 112,000 every 3 years for oil and on my third fuel filter. What can I say it only goes when it`s hauling.LOL