This topside oil changer is perfect for those that do not like crawling under cars and getting dirty. All you need to do is drive your car around until the oil is at operating temperature. Park the car, pull the dipstick, connect the various hoses to the device, then put the hose down the dipatick! Next, extend the foot support on the bottom and you can either start pumping away like a bicycle pump, or you can connect a compressor hose to the pressure fitting. I do it the manual way which is slower, but much quieter. Depending on how much oil you have in your engine, you should be done in 10-15 minutes. It can be done faster with an air compressor, but I have never used it in that manner. If you car has more than 6 quarts of oil, you will need to stop and empty the tank, then start again. You can simply disconnect the fitting to the device and pour the dirty oil into an old container or those oil change boxes. This is very easy to use and the design is good with lots of bracing on the container. All items are well made. The only things that could be improved on would be a holder for all the hoses, and a better shut off valve for the compressor fitting. This is a must have for any DIYer that has a car with a dipstick. There are even cars without dipsticks, that have an access port to use these.
Daniel 
Flathead 
Brian Pham 
Jeff 
