VEHICLE HAD COME TO A COMPLETE STOP, CONSUMER KEPT FOOT ON BRAKE, VEHICLE ROLLED FORWARD AND REAR ENDED VEHICLE IN FRONT, BRAKES HAD FAILED. TOWED TO DEALER, WHO FOUND BRAKE SYSTEM CONTAMINATED WITH MOTOR OIL. DEALER REFUSED TO HONOR WARRANTY, STATED CONSUMER MUST HAVE PUT MOTOR OIL IN BRAKE LINE.*AK