around every 20,000kms but your best bet is to put in a clear inline filter so you can see if you have any dirt and junk coming in
the more you change it the better, i already had to replace my fuel pump because of poor design. The filter was after my pump(on the firewall) so rust from my tank destroyed my pump. Now i have a clear inline filter before the pump and it has a magnet inside, the pump has a filter inside and then i have the stock toy filter.
475,800 and rising
I am the black cloud of somke that flies by at 3500rpm!
(Please note diesel smoke is dangerous so lay off the throttle!)
Pulls like a draft horse, hauls like a pack mule.
[This message has been edited by Mrdiesel (edited March 14, 2002).]