I have an older truck with a manual transmission and a hydraulic clutch. The clutch was feeling soft. I checked the fluid and it was filthy. I found Keep It New from reading reviews and brought it in to get checked out. If you don't know. Clutches are like brakes. Eventually they all need replacement. A clutch job isn't cheap or easy. The Mechanics at Keep it New checked my truck out and did something surprising. Instead of jumping into a new clutch job, they flushed and replaced the fluid and did a test drive. They found it a lot better. This cost me a tenth of what a full clutch job would have been. Well done!