1098

CAR RUNNING GREAT ONE WEEK PREVIOUS, ALTHOUGH MECHANIC TOLD ME I HAD SOME MISFIRES BUT NOT JUST ON ONE SIDE. MIGHT NEED PLUGS SOON. 79K MILES. OK. WEEK LATER I GOT GAS AND IDIOT ATTENDANT PUT 89 OCTANE. CAR 3 MINUTES LATER IS RUNNING ON LIMP HOME MODE. TANK FULL. I LIMPED HOME. MECHANIC CAME TO HOUSE (FRIEND) PULLED PLUGS AND VALVE SEALS WERE LEAKING TOO AND A FEW PLUGS HAD OIL RUNNING INTO THEM. PUT NEW PLUGS AND RED BOOTIES AND NEW VALVE COVER SEALS. STILL RUNS LIKE CRAP. I HOOKED UP AN OBDII READS P0307 P0311 P0309 P0312 P0308 P0310 P0300 MIL ON, MONITORS, 5 INC, CATALYST, EVAP, SEC AIR, 02 SENSOR, 02 HTR, 3 READY, MISFIRE, FUEL, COMP... IM SURE GAS HAS SOMETHING TO DO WITH IT SO WHERE CAN A DRAIN TO RELEASE AS MUCH OF IT AS POSSIBLE?

tusabes

bad gas would not cause these problems, and there is no issue using 89 or even 87 octane as the car will adjust to it

you have a s600 which is notorious for coil failures and the issues you mentioned are not related to gas

desired_speeds

+1 it's not the gas.