I accidentally added plumbers antifreeze (ethylene glycol) to one of my tanks last Fall. Approx 1 gallon added to approx 35 gallons of diesel. I am trying to drain the tank by inserting a hose and sucking out the diesel, and any sludge that may be in the tank, 27 year old boat. There seems to be a filter approx 6-8 inches below the fill port and I am not able to insert the hose. What is the easiest way to insert the hose? Will I have to dismantle the intake hose?