I changed my oil twice. The first time I had a friend help me and it went very smooth and no mess, the second time I found out a small spill
makes a big mess. I will be installing this valve if I do my oil again. Without it you have no control of gallons and gallons of oil, everything must be CORRECT to prevent any spill. I have changed my car oil for years and never lose a drop, a big difference here. Good Luck