Who is using a per-filter and what did you buy? I am thinking about a RACOR 2 micron and a 30 lb electronic gauge on outlet side to monitor pressure drop.

I have seen a lot more dirt in the bottom of the transfer tank for fuel I buy for my tractor ever since the ULSD hit the street.

 

I run Baldwin filter housings w/10 & 2 micron filters...easy to install and it was about $99. PM me if your interested in more details.