How often should I change my fuel filter on the 6.7? I have been draining the seperator every month. I was told I don't need to change the fuel filters as often as my 6.0 Ford. I have 10,000 miles and have not changed them yet.

 

I'm going to change mine every 10,000 miles. I figure it cheap insurance for the hpfp.

 

me too - every 10k

 

thats my plan as well....

 

Manual says every 15,000 and that is what I have been doing.

 

Ditto on the 10k. It seems my milage picks up slightly after changing them.

 

Every 15,000 here.

Edit: well, except last change because I was ready to tear the thing apart at 13k and check for mysterious metal pieces; found nothing.

 

I changed mine at 22,500. I was comfortable with that interval given they way my truck runs and never finding any water in my weekly sampling. I had thought about changing it earlier many times but just never got around to doing it. I am not sure on the interval for the next change. I am torn between good preventive early changes and whether it really makes a difference for normal driving conditions.

 

The way I look at it the more restricted the filter gets the better it actually filters.........lol. I'm staying with Ford's specified change interval.

 

The other side to that coin - The more restricted the filter gets, the more starved for fuel/lubrication your HPFP is. We all know what happens when your HPFP gets upset....

 

At over $100.00 I wouldn't change it till I had to.

 

When the hpfp blows up and Ford says no warranty because dirty fuel filters that should have been changed and weren't. You're on the hook for 10-12k in repairs.

The filters are much cheaper!

Also, you can buy new filters for $70 online, give or take.

 

If the filter kit is that high, they've gone up.
I've paid in the $50's for the past few I've purchased.

 

Might I ask what filter kit and where you bought it?

Cheapest I can find Fram is around $70.

OEM are a bit more than that.


Directly from my dealer is almost $150 for both filters!

 

Page 71 of the 5th printing of the Diesel supplement states 22.5k for normal operating conditions or as indicated by the message center.

15K or 600 hours is for special operating conditions.

The manual also states that the "Oil Change Required" message indicates fuel filter change?? (Examples in the Scheduled Maintenance Guide on page 77). So how do I know if the car is telling me to change the fuel filters or the oil? Anyone seen the actual "Change Fuel Filters" message? If so what does it say? I find it hard to believe that with such a high tech display they could not use proper verbiage.