Hi Peteski,
Change the oil first its the cheapest option, my 6 speed was getting a bit fraught and I drained and refilled with the castrol recommended Castrol Syntrans Multi Vehicle 75W90 now it is lovely and smooth at all temps and feels like a new box, mine has done around 90K with no record of a change. On the 6 speed you access the fill through the front nearside wheel arch after removing the wheel. Its an 8mm allen, just above and to the right of the driveshaft output. I used a socket type as it was a bit tight. The drain is the same type of plug but lower and a bit more awkward to remove as their is not much room between the subframe. I cut an 8mm allen key down and used a spanner to get it out. Not sure if its in the same position on the 5 speed box
Got to be worth a try first before spending big.
Steve
Change the oil first its the cheapest option, my 6 speed was getting a bit fraught and I drained and refilled with the castrol recommended Castrol Syntrans Multi Vehicle 75W90 now it is lovely and smooth at all temps and feels like a new box, mine has done around 90K with no record of a change. On the 6 speed you access the fill through the front nearside wheel arch after removing the wheel. Its an 8mm allen, just above and to the right of the driveshaft output. I used a socket type as it was a bit tight. The drain is the same type of plug but lower and a bit more awkward to remove as their is not much room between the subframe. I cut an 8mm allen key down and used a spanner to get it out. Not sure if its in the same position on the 5 speed box
Got to be worth a try first before spending big.
Steve