Well I must add my two cents I’ve owned 17 or 18 boats in my life and the tall cylinder one on the left side of the table Extractor is the one I have used with the most success over the years what made me a firm believer in it was I used to use it on my Ski Boat that was carpeted and I only needed one paper towel to prevent any dripping or mess on the boat I will add I am a very OCD person about working neatly plu that boat I used for Skiing and Pulling the water toys did have a light beige carpet that still looked brand new after 10 years of using the boat on many family vacations I will note that vessel did have a small inboard /Outboard system in it the Mercruier 135 HP setup and the oil was extracted using the dipstick tube and the skinniest tube that came in the Kit from West Marine I also used that Extractor on my twin engine V8 Inboards on another boat I owned for the bigger Diesel powered boats I prefer Reverso Systems for a more permanent System that is the easiest way of keeping up with the maintenance of multiple engines and generators