I was wondering what kind of fluid to use in the manual transmission on an 01 Saab 9-3. The manual says it's a "lifetime" fluid, but it's already got a lot of miles on it and needs a change. I'm reading that it's either Saab Synthetic Manual Transmission Fluid or MTF 0063. These fluids are supposedly incompatible with each other, so I'd just like to know which one to use. The car shifts fine so I'd like to add the same kind of fluid that comes out. Any help? Thanks.