This will be interesting, I changed my filters for the first time about 2-3 mths ago when the truck odometer read 50k kms real mileage 152,000. It looked just like your dirty filter on the rail did. I then gave it a dreded half turn and I noticed the FF I cursed.. Then put new filter in and cursed again anyway I'm pretty sure that rail filter I pulled out is from the same date the truck rolled off the assembly. What can I say that's my filter story. Still running like a champ and I hope I don't have to make that 10k repair

Koboss

 

the lower is the only one with the FF. its one of the ways we can track repairs at the dealer level. As a matter of fact most post production parts are a little different then the ones used at the plants.

 

thanks cheezit so that just means that it was put on at a dealer

 

no that means the FF stamp part was put in at the truck plant at time of manufacture. and that stamp is how we know that.

 

thats what i thought well it held up well kept the dirt out!!! hpop stil pumpin thanks god

 

150,000 KMs on the original filters?!?!?!?

 

Damn that's crazy that you had that many miles on the original filter.

I did not have time this week to get the tank pulled. I think first what I am going to do is pull the frame filter and see what it looks like, and then go from there.
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How many miles/gallons of fuel since you changed them? If it's been a couple tanks and the rail filter is clean maybe you already got the contamination in that first filter. Since the top filter was clean then it would seem to me that the rail filter took it all anyway. But I'm just a "shade tree" guy. If you want to be sure go with Cheezit's advice and clean the tank. It's not a big deal to drop the tank, I did mine when I put the 60 gallon tank on and it was not much work at all. Just make sure you don't have alot of fuel left in it, about 8 lbs to the gallon I think.

 

I only have a couple of hundred miles on the new filters at the most. I just don't have time at the moment to drop the tank, just too busy. I am going to take the frame filter out and inspect it when I get a few more miles on it and then go from there I think. I dropped the tank on my old 01 once to do the in-tank mods, so I figure it will go just about the same way.
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Anyone know a good website to get the filters for a good price?

 

www.dieselfilterslonline.com

Good prices and great customer service. Lots of us us them.

 

I got mine from Performance Truck Products. He sells the Racor filters.