Jabsco Flat Tank Oil Changer System - 3-1/2 Gallon Tank - 12VMeet the Jabsco Flat Tank Oil Changer Systema compact, self contained solution for oil changes on the go. With a 3 1 2 gallon (13 L) flat tank, it's ideal for boats, RVs, lawn and garden equipment, and more, and stores neatly in deck boxes, boat storage lockers, or RV compartments to save space without sacrificing performance. 3 1 2 gallon (13 L) sealed flat tank: minimizes mess and odors during transfers and stores flat when not in use. Self priming