Mike, I clean them out in the car w/o having to take them out. Pull out the baffle system and the sending unit and with a little Berrymans B12 in a vented area go after it. John Hervey www.specialTauto.com << I'm going to be starting work on another car here rather quickly, and this one has been sitting with gas in the tank for at least 4 years, so the first thing I want to do is address the fuel system on this car before attemping to turn it over. What is the best method of cleaning out the fuel tank? Just drop and scrub, or is there any cleaning agnets out there that would assist? Thanks. Mike >>