fuel filter

[AOW]

Can any body tell me why the owners manual tells you the fuel filter should be changed at 20,000 miles,but dealers not doing until 40,000,on a 2.9,as any body ad any problems with sliding door hard to open been in twice 4 same thing first time just oiled runners,still same so today they put a new inge the one that slides under glass,i said to them, you have not cuerd it,so now they think it is the rubber at top of upper runner,any thoughts

[Carnivore]

Hello,

For the fuel filter, will naturally depend on the quality of the fuel. My first fuel filter lasts for 80000km, but the second was only 25000km. afterwards it is always around there (20000km). The symptom will be the car engine feels like dying, it will downshift gear, down and down till 1st gear.

so i always replace before that happens because it is simple and cheap to do.

wonder why the fuel quality was so bad right now....

[AOW]

Thank you for your reply,
I know what you mean about the fuel and the simptons as i own a pajero which i am a great beleaver of reg oil changers i do that at 3,000 to 4,000 intervals & fuel & air at 10,000 miles & never ad any problems but i was surprised when told 40,000 as i also no how much dirt can be picked up if you let your tank get low
cheers & a merry christmas to all who reads this.
AOW