What outside air temperature are you getting this stalling ? There's been a lot of good advice posted. My opinion is that (if your problem only occurs with air temps below around 12 or 14 degrees) that you are having fuel gelling in the lines. To heck with the filter. I know you said you use a lot of anti-gel and dryer -- I agree with the other guy, stop using dryer which is just alcohol and causes other problems. In spite of using a lot of anti-gel if you are running in very cold (down near zero) air temp your fuel lines and the tank are all in a deep freeze.
Here's a sure test for you: Run 50/50 kerosene and diesel fuel (in other words half #1 and half#2) and run it long enough that you are sure the whole tank and all the lines have nothing else in them. If the problem is gone then you had gel. If that does not remove the problem then you have some other sort of issue.
By the way, I had a VW diesel once which ran for 150 miles just fine until I went into higher elevation mountains. The air temp went below 10 degrees. The car shuddered and eventually stalled. Gel. Same thing starting in northern VT when below zero. Engine heater was great. Started right up and 1/4 mile later stalled. Those long lines from tank to engine were out there in subzero temps and of course the fuel gelled. Syphoned out some fuel, replaced it with kerosene to roughly 50/50, ran fine the rest of the day & the trip.
Newer automotive diesels have heat in/along the fuel lines.
