2010 Toyota Corolla Q&A

2010 Toyota Corolla Question: ROCKER ARM FAILURE

OUR 2010 COROLLA 10,000 MILES HAS HAD 2 ROCKER ARMS FALL OFF ON TWO DIFFERENT CYLINDERS. THE FIRST TIME TOYOTA FIXED IT THE SECOND TIME THEY SAID THAT "BAD GAS" HAD CAUSED THE ROCKER ARM TO FALL OFF AND WONT HONOR THE WARRANTY. HAS ANYONE HEARD OF THIS BEFORE? -
Answer 1
Over rev the engine. Miss a gear? This causes valve float and followers to dislodge -