Originally Posted by gcfcos

We used to use it when I had my garage as I was in the good garage scheme and to be part of it u had to sell this stuff when servicing etc. to be fair though we did loads of tests on a car with the bloke which is part of joining the good garage scheme and there stuff is awesome, I never used to believe a lot of these additives but there stuff surprised me on the tests we did! I used the gearbox treatment on a 106 diesel with a noisy gearbox and gearbox oil leak and it quietened it right up and stopped the leak long enough for me to flog it lol :-(