I HAVE A CAR BRAND ACCENT HYUNDAI MODEL 2005, IT RESULTS THAT I MAKE OIL CHANGE 15-40 MULTIGRADE, AND ABOUT APPROXIMATELY RUNNING 3000 KM I START TO CONSUME OIL, BUT NOT ONLY THAT AND OBSERVED WHEN MOVING THE CAR AND ACCELERATE BLUE BOTTLE THE EXHAUST PIPE AND ALSO EXPULSES WHEN STOPPING IN A SEMAPHORE, I ALREADY CHECK THE PCV VALVE AND IT IS OK, SOME ORIENTATION REGARDING THANKS