This thing is great! Been using this to change my oil on an Audi a4, and since the oil filter of my car is on top of the engine, changing my oil now just takes me 10 mins! 2 minutes to set this up, 1 minute to change the filter, 1 minute to refill the oil and 6 minutes to enjoy a cold beer while feeling good about myself cause i just saved a lot of $$$ not going to the dealer. I also did check if this thing was getting all the oil in the engine by using this to extract everything i can and then removing the bolt from the oil pan. very minimal oil drained from the pan so that means that this thing sucked almost 5 qts of oil from my engine. After that i never doubted this thing ever again.