I just passed the 100K mile mark so I figured I would try this based on a recommendation. Honestly, my idle is quieter than it has ever been (well for a while anyway) and it fixed my RPM drop problem. When I press in the clutch my RPMs usually drop so fast that the car feels like it's going to stall for a split second. I thought it was the light weight flywheel that I installed but after using this stuff it stopped. I'm not sure why but I will take the free pass.