Originally Posted by senix

Great write up! The 6.4 uses a 36mm socket for both oil and fuel filters.

The fuel water separator is of a little different design so it is just a yellow lever that you will turn to drain before removal of the filter. Maybe attach a small hose on the end so you can drain into a pan.

I also might add that on the 6.4 sometimes just cycling the key to prime the fuel filters to purge the air is not enough. I have had to hold down my fuel cutoff switch and crank the motor to get it to fire.

Fuel fiter for the 6.4 on frame is a little more difficult as well because of the wiring harness, so I use a wiggle tail on the end of the socket so I can get a better angle.