Wouldn't a failed booster show up as the opposite problem, with the brakes suddenly feeling very stiff because they've lost the power assist?

I have a 2002 S60. Last week I noticed that suddenly the brake pedal would slowly go to the stop if I kept pressure on it while braking. The car would stop, but the pedal would not give me any back pressure, even after pumping it a few times. I replaced the master cylinder and bled the brakes. Now, ...

Just bought a 2002 S60 2.4T for my wife. The dealer (nice guy, not a Volvo expert) suggested that Volvo's recommendation to run high octane (91+) fuel for the turbo models isn't necessary as long as there's no acceleration pinging. I have run into this problem before with an '87 Legend I owned, and ...