Fuel and air filter change intervals on 4.0 Explorer engine

[2003TRD]

I think my ford focus manual has something like a 35-40k fuel filter change. I changed our 2002 focus at 25K and the crap that came from the tank side looked like hot tar! So I would say go with the 25k fuel filter change and 12k wouldnt be bad for your air filter change.

 

[Nitrox]

I misplaced the manual on my 2002 Ford Explorer with a 4.0 engine. The fuel and air filters have about 12,000 miles on them, and I wanted to know at what mileage do I change them. Purolator Air filter is $10 and fuel filter is $17 at Discount Auto. I figured the air filter is cheap enough to change at 12-15k but what about the fuel filter? Thanks.

 

[JohnnyO]

I have a 2002 4wd Ranger with the same engine, the book says to do both at 30,000 miles. I tend to change air filters on an as-needed basis which is a little more often. Also the book says to change your trans fluid at 30,000 and the transfer case at 60 thou.