Ack. Lucas. I might work for what it's worth. All I know is I bought the Lucas power steering additive once and it only made things worse. Granted, I needed a new PS pump as it was, but I think the stuff quickened the death of the unit rather than extending it. It went from squeeling on turns to squeeling all the time right after I added that dark red goo. And no, it wasn't the belt. The pump's bearings were dying. The thing died a few weeks later.