Just bought my truck two months ago, 34k miles(so far put 3k on it), changed it out today, and im glad I did...

 

I have to change mine at every oil change if not more often. Last time I changed it @ 6K & it was as bad as the pick above & that is from Conoco #2.

 

someone got the bottom of the tank at a fuel stop!

 

I do mine every other oil change. It was fairly clean last time I changed it. I guess the station I normally use is pretty clean

 

I did mine at 7500 miles and it was really clean.

 

That is one dirty fual filter....are you sure they didn't have that as an oil filter

 

LOL, sure looks like it was dipped in some used diesel oil....

 

Are you guys refering to the dark color of the element or debris on the filter?

Every filter I've changed on my cummins comes out black like the one shown and I double filter all my fuel and change out every 5000kms.

It has been something I've questioned every time though.

 

mines all ways black every time ive changed it (3 times so far) and only have 30500 miles on the truck. I only run #2 and Meaner Power Cleaner.

 

The blackness is normal. What you're seeing is the filter catching "asphaltites" in the fuel. If the filter stays pretty clean you're either using pre-filtered fuel (a good thing!) or the filter isn't doing it's job (a bad thing!). I change mine every other oil change.

 

Ah, whew

Good to know it wasnt that nasty afterall, or that they are all like that

Just running ole #2, probably start using a additive though, with the low sulfer bs...

 

You musta bought that truck all original (as in original filter).

I used to change mine at 10K and never saw anything like that. She's pretty dirty. Feels good to get a new filter on when you realize that you had a nasty one in there.

 

A dirty non bypass filter will filter smaller material out of the fluid than a new filter. The only real way to know when it's time to change a non bypass filter is with a pressure gauge.

The black color is natural for a diesel fuel filter.

That being said it sure looks like it was time to change it.

 

The first time I changed my fuel filter it was like the example shown above. Really yucky!!!! That was after using a lot of US diesel. Every change after that, using Mexican diesel, the filter has come out white and clean. In fact, the filters have looked so clean that I have even debated on reusing them for a few more thousand miles. Always used the Fleetguard FS 19579.