Volvo: 1996 960 Fuel Type and Entry Remote, premium fuel, newer cars

Question
I recently purchased a 1996 960 Volvo.  The manual calls for premium fuel.  Is premium fuel really a necessity or just for performance?

Also, the remote entry clicker does not work.  I can hear it “chirpâ€? but the doors don’t lock or unlock.  Any suggestions?

Thanks,
Matt


Answer
could be the battery on the clicker, the fuel: the premium fuel burns slower, newer cars have a knock sensor that can detect vibrations in the engine (pinging) , the computer can advance the timing for a few seconds if knocking occurs, if the manual says it i would do it, but try the medum grade see what happens ,