I decided to write this guide to help anyone wanting to change their gearbox oil, but also included is how to check the gearbox oil level, and replacing the gearbox gear selector shaft oil seal. I wrote this guide after changing the gearbox oil, and replacing the gearbox gear selector shaft oil seal, on my 1999 1.3mpi felicia (right hand drive), but I believe that it is a very similer procedure on all Felicias and Favorits. It's not too hard a job, and for anyone who has changed their engine o