Good afternoon everyone,
I'm going to change fuel filters myself for the first time and just saw that I have two fuel water separator's.
Both are fleet guard. FS1000 &. FS1212.
Is that ok or should I have a regular fuel filter and a fuel water separator.
The micron rating is what is important.
The primary shows to be a 20 micron element.
The secondary fuel filters shows to be a 10 micron element.
If all your engine requires (check with Cummins for your engine serial number) is 10, you are good to go.
But (OK, LARGE BUT) it requires, say, 5 micron, then you need a finer secondary element.
Thanks Brett,
I went to NAPA and their filter is 5 micron.