Just to follow up on this in case anybody stumbles across this later. I wrote to Volvo (turn out I accidentally e-mailed Volvo UK) and this was their response: Thank you for getting back to me. No worries at all, I'm happy to be able to support! I have heard back from our internal team and they have...

I just bought a 2011 C70 with around 91K miles and I'd like to replace the transmission fluid. The printed manual says that my car uses JWS 3309 spec ATF, but FCP Euro says JWS 3309 "Up to chassis -112000" and JWS 3324 "Starting from chassis 112001- (Last 6 of VIN)". My chassis n...