I like gravity filtering. Makes no sence to use electricity. that starts to negate the economical incentive to go Veggie.

What kind of filter are you using from the 55 gal barrel? Is it just a generic house water filter? What micron rating are the filters? It sounds like gravity is pushing the WVO thru the house filter without much problems. How many gallons can the house filter handle before replacement?

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1987 300TDT
1981 VW MKI Caddy 1.6 diesel, waiting on engine swap
1983 D-50 Power Ram 4x4 "Mitsubishi" 2.3 turbo diesel
assorted gas powered crap and motorcycles

RIP: 1984 300TDT, 1982 300TDT, 1984 190D 2.2, 1992 300D 2.5, 1987 300TDT, 1982 Maxima LD28, 1983 Maxima LD28, Isuzu C223 P'ups X3, 1983 Holiday Rambler 6.2 Banks turbo diesel, 1984 Winnebago LeSharo 2.1 TD, 1985 Allegro 6.5