A method detects a \u201cmisfire\u201d condition in an internal-combustion engine including a control unit, a driving shaft and phonic wheel that is splined to the shaft and coupled to a sensor. Check valves are provided to charge a hydraulic pressure in a communicating circuit intercommunicating the two fluid lines. A cylinder having a hole is provided in the concave body. The lid includes facility for engaging either the mouth opening of the container or the opening in the closure base to close such openings in the closed position of the lid. The energy-absorption system including a cutting mechanism positioned to cut a guardrail section upon impact by a vehicle to decelerate the vehicle. The composition comprises hydrophobic nanoparticles of silsesquioxanes containing adhesion promoter groups and low surface energy groups.