Changing engine oil can be messy, time consuming and there's no good way to dispose of old oil. The Marina Pro is a new user friendly and environmentally safe oil changing system. It's fast, convenient and eliminates mess and clean-up. The Marina Pro works by creating a powerful vacuum that draws the used oil out of the engine and into a holding tank for easy disposal to a recycling center. Simply insert the extraction hose into the dipstick tube, pump the handle 40 times, release the hose clamp and Marina Pro extracts the oil directly into its plastic holding tank. Works great for boats, cars, trucks and more. U.S.A. Dimensions L x W x H (in.): 16 x 7 x 11, Tank Size (gal.): 8, Suction Hose Length (in.): 48.