The OIL EXTRACTION PROCESS
Oil extraction eliminates the need to pull the drain plug, which is usually a messy process. Using a tank that is negatively charged (vacuum) and a tube that is inserted into the dipstick tube, the oil can be sucked out.
First the vehicle is started to circulate the oil and and any sludge that has settled in the bottom (there shouldn’t be sludge if you change your oil at the recommended frequency). At that point the engine is shut off and the extraction process can begin.
It is extremely efficient and clean.