After countless gearbox issues, breaking a gearbox every few months I enlisted the help of the guys at Martini Racing. After discussion with them it was decided that their fully synthetic Sint 75w90 would be best suited to my application. A new gearbox was installed, filled up with Sint 75w90 and to my amazement the box was perfect, run after run, track day after track day. It just kept going and going. After trying every possible oil out there with little success, I firmly believe the Sint 75w90 played a major role in the longevity of the box. I was 100% confident to push it to the limits without worrying about the oil overheating and breaking down. With over 200kw at the front wheels, the oil gets a good work out!

• Matt Cole