hheynow
Señor Aceite de Soja
I fail to see how a heated filter will help you if your tank has gelled solid. I'd suggest a pad heater for your tank that is plugged in at night AND a coolant heated in-tank Hot Fox. Plugging in the block heater will help the coolant heat faster as will a high idle chip setting. So you now can start on fully liquid bioD and as the engine warms up it will continue to heat the Hot Fox so your bioD will remain warm from the tank. This will eliminate the need for heated lines.