I have a Supersport R 210 with 5000 miles on the clock which is fitted with a Titan LSD. I am no expert on the performance of LSDs; however I have drained the oil and it is a filthy black liquid! Additionally I have carried out the following check, Wheel rotation check. With the rear of the car raised rotate one wheel. The opposite wheel should turn in the same direction. Non rotation or rotation in the opposite direction of the opposite wheel indicates possible internal failure of the LS unit. One wheel turned in the wrong direction and one did not rotate at all!