I'm so impressed with this brake bleeding system that I felt I should share. I think it was KernDog who mentioned using this product last summer. While I have always thought I had done a decent job of bleeding brakes with the old get your wife or kids to pump the pedal ordeal, I had 1 car that the pedal would be slightly mushy the first time pressed after sitting awhile. So last fall I ordered the Motive 0113 jug along with the 00113 Chrysler cap kit. My master cylinders are all Dr Diffs 15/16" aluminum versions. The 2 chambers are joined at the top, so it probably makes it a bit easier than the original style cast masters. I still don't quite understand how it doesn't pump air into the system at first, but it doesn't. Yesterday I used it on all 3 of my cars. Ended up getting some small air bubbles out of every one of them. This is truly a one man bleeding system that works marvelous. And the best part is I don't have to watch the wife and kids roll their eyes when I ask them to please help pump a brake pedal just one more time, lol.