HEY I SEE YOU HAVE GOT A GS , I PERSONILY WOULD GET 10W 30 OR 30W ,BUT PUT A LUCUS OIL TREATMENT TO COAT THE VALVE TRAIN BECAUSE U MIGHT GET DRY STARTS. ALSO WITH THE BRAKES , IT COULD BE THE CHEAP BRAKE PADS OR NO VIBRATION LUBE ON BACK OF PADS, OR THEY ARE THINNER THEN U THINK THE THEY HAVE RIVITED PADS NOT GLUED PADS SO THEY WEAR EARLY EVEN THOUGH ALOT OF PAD COULD BE THERE. HOPE U HAVE FUN WITH YOUR ARISTO HAHA :D