Not 100% sure, but the previous owner when he selected reverse probably didn't come to a complete stop. Always make sure your at a complete stop before selecting reverse.
How many KM's on your car??? And how many times has the car had a gearbox fluid change in it's life?
I change the fluid every 50k and add that Nulon Gearbox treatment, my T5 has done 196km and not a problem.
Sorry that i can't pinpoint your problem.
Motor May 2001 Quote: "Believe it or not, there are actually a bunch of weirdos out there who reckon a six cylinder is the dux gutz. Bugger it: I'm one of them" :s5
AUII Late Ed XR6 HP T5 Venom- Full Tickford Body Kit, 17in Wheels, Herrod Bi-plane Spoiler, Momo Steer/Gear, T-Series Interior Options, Premium Stereo and a very light-tuned 4.0L I6
(FPV-Tickford Club of NSW Member and Co-Founding Member of 3FB Inc, Ford Forums Food Bandits)