I use Quik n' Dri. [no longer sold]
the same product is is also available as
http://www.watercrystals.com/http://www.watersorb.com/http://watergelcrystals.com/A 5 gal water cooler jug with a wide hole cut in the bottom makes a good filter/dryer/funnel. The standard bag filters fit perfectly over the jug and hang through the hole. Optionally one can make a good bag filter out of the backs of old jeans legs. A universal water filter cartridge holds the drying polymer and fits tightly in the neck of the jug. The inverted jug fits nicely into the bung opening of a 30 gal HDPE barrel. It takes about an hour for the 5 gal of mix to flow through the dryer column/filter funnel. As any water is absorbed the polymer swells to a jell [like cooked tapioca] and slows then stops the flow. When it takes more than a couple of hours to run through I know it's time to change the cartridge of polymer. I use a small 1/10hp 115v transfer pump to circulate the BD fuel mix from about a foot off the bottom of the 30 gal barrel into the filter/funnel.
A Universal Water Filter cartridge fits into the neck of the jug.
The cartridge is easily disassembled, and the bag containing the water treatment particles removed to provide space for about 75ml of Q&D with headroom for expansion with the cap replaced.
This Q&D column is good assurance of dry fuel and as an indicator of moisture trapped.
The fuel mix of BD[50], kerosene (or seasonal pump diesel)[40] and petrol[10] is pumped from about 6" off the bottom of the storage barrel, which is in my unheated fuel shed, through a 5µ filter cartridge and into the vehicle tank. This cold filtering/settling method has eliminated the HMPEs that would otherwise settle out in the vehicle tank and clog the fuel pick-up screen. This is the 4th winter using this method to prevent fuel system problems in below freezing temperatures.
