no piont changing the clear prefilter unless you can see junk in it. I carry spare fuel filters AND the tools required to change them. Also, I have an unopened qt of tranny fluid or seafoam to prime the secondary filter with if it needs changing. saves a lot of pumping.

__________________
1984 123.193 372,xxx miles, room for Seven.

1999 Dodge Durango Cummins 4BTAA 47RE 5k lb 4x4 getting 25+mpgs, room for Seven.