Hello people, does someone have experience with gasket change on the Saab 900 gearbox or with oil loss? Mine definitely loses too much gear oil or is it actually motor oil. Does it bring something that motor oil replaces gear oil, since the viscosity of gear oil is worse, so thicker than with 10 or 15-W40 moetor oil – do I think? can you do something yourself or a friend’s workshop or do you need special tools that only have a SAAB workshop? I can’t tell you exactly where it comes from but also say that I only have the Saab for 3 weeks.