Just recently bought this car wondering what gas octaine I must use

Doesn't have anything before I had a 93 sts and it had a sticker in the gas door and on the dash it's said must use premium but not on this saab

google it.lots of forums with lots of info.

Did it says regular which is weird because it's turbo you know

go to the Saab 9-5 turbo forums,it is different.

Ok thanks

your welcome.