NHTSA Complaint #11230310 — 2017 HONDA CIVIC

I DO OIL CHANGE BY MYSELF. HERE I AM REPORTING FUEL DILUTION OF ENGINE OIL ISSUE ON MY CAR. THE SECOND LAST TIME OF MY CAR'S OIL CHANGE WAS ON MARCH 16 2019. I FOLLOWED THE MANUAL STRICTLY TO PERFORM THE OIL CHANGE AS WELL AS THE OIL FILTER REPLACEMENT. I ADDED 3.7 QT OF NEW MOTOR OIL (MOBIL 1 ADVANCED FUEL ECONOMY FULL SYNTHETIC 0W20), WHICH IS THE VOLUME SPECIFIED ON THE MANUAL BOOK. LAST WEEKEND ON JULY 7 2019 I DID OIL CHANGE AGAIN, STILL FOLLOWING THE MANUAL BOOK STRICTLY. WHAT MADE ME CONCERNED WAS THAT THE VOLUME OF THAT USED MOTOR OIL WAS CLEARLY GREATER THAN WHAT I ADDED ON MARCH 16. THE MOTOR OIL I PURCHASED CAME WITH SEALED BOTTLES, EACH CONTAINING 1 QT VOLUME. I WAS SURPRISED TO FIND THAT THE USED OIL FULFILLED 4 BOTTLES, WHICH WAS 10% MORE THAN WHAT I ADDED 3 MONTHS BEFORE. THIS WAS THE SOLID EVIDENCE THAT SOMETHING WENT INTO THE MOTOR OIL, WHICH I BELIEVED WAS GASOLINE, BECAUSE THE USED OIL HAD A GASOLINE SMELL. DURING THIS PERIOD, I ONLY CHOSE TOP TIER GASOLINE BRANDS AND ADDED REGULAR #87 WHICH WAS SUGGESTED BY HONDA, THEREFORE THE QUALITY OF GASOLINE I ADDED WAS NO PROBLEM; I DIDN'T SEE LOSS OF ENGINE COOLANT, BRAKE FLUID, TRANSMISSION FLUID DURING THIS TIME.