I have a 2001 VR 6 VOLKSWAGEN JETTA ... GOT MY OIL CHANGED, LATER THAT DAY I FILLED UP MY TANK W/ PREMIUM AT A MOM AND POP GAS STATION (I GUESS THATS WHAT YOU WOULD CALL IT / NON NAME BRAND GAS). ANYWAYS, I PULL OUT OF THE GAS STATION AND MY CAR IMMEDIATELY BEGINS TO SHAKE, THEN THE CHECK ENGINE LIGHT CAME ON. SINCE THEN MY CAR HAS NOT RUN THE SAME, IT GOES, BUT I REALLY NEED TO STEP ON IT, DEFINITELY NOT RUNNING RIGHT. I THOUGHT MAYBE I GOT A BAD TANK OF GAS, BUT THE CAR SMELLED LIKE IT WAS BURNING OIL. NOT SURE WHAT TO DO ... HAVEN'T BROUGHT IT TO THE DEALSHIP YET. ANY THOUGHTS ?

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2001 Volkswagen Jetta 2.7 litter