Now that Saab's own fully synthetic gearbox oil is no longer available (unless you know different?) what is the best equivalent?
If anybody knows what the Saab one really was (as I'm pretty sure that they didn't refine their own ;-)) I'd be really pleased to know that, as I hate topping up with different oils from what's in there already.
Alternatively, I'll drain, flush and refill with new stuff if I have to - and then stay consistent with that in the future.
Any and all advice appreciated, B