hi... used it last just before i got my gripper so under a year ago... very clean inside also and still has new oil in it... i work in acton west london so up their for 4 days a week...
the guy i got it from hadent has his cosworth for 13 years and this was his spare.. i did a day at his station and he over heard me talking on the fone about cars ect and said that he had a cossie years ago and still had some spares.. so a low miles diff appealed to me but he still knew how much they were ... i was running a bara diff before and had to send it back loads of times so thought that this would keep me on the road while the other was away.. im going to trust the gripper though as the car hardly gets used so no need for this... hopefully..