Didn't work as hoped, getting better at removing oil stains from concrete driveways and results with a product called Spray 9 clean Same spot several times not very impressed, ended up using a wire brush and then made some progress but it doesn't really feel like sucking out oil, it appears to be a mild hydrochloric acid formula for concrete bleaching, it lathers up well when you spray this stuff and the nozzle seems to be doing more with less masking it seems like you're getting a lot out get a bottle! I'm going to try simple veggies and baking soda along with wine and see if grandma's old school works for anything that helps remove oil stains from concrete. She would be so proud if it worked she swore it was tested and true and worked for everything lol