Join Date: Jul 2007
Location: New Zealand
As a first step you might like to try flushing, draining, and replacing the gearbox oil - might get a bit more life out of the synchro.
If there is no record of the gearbox oil having been changed in the last few years, I personally recommend a can/bottle of STP Engine Oil Flush added to the gearbox oil when hot after a run. Then take the car for a gentle drive (only a few miles), using high revs in low gears but not accelerating hard. Drain the oil. The flushing additive helps to shift some of the black sludgy buildup that many gear oils create over time.
Then I would refill with a good-quality 75W synthetic gear oil (ideally the Tutela ZC75 available from your dealer). The gearbox takes about 2 litres.
Usually I find the gearshift is then a lot lighter and more pleasant to use, but if all that makes no difference, at least you'll only be down a little money compared to the cost of having the gearbox removed, rebuilt, and replaced.
'00 GTV V6, '08 FIAT 500, shell and parts for a '71 FIAT 850 Coupe