A fabric softener composition is provided by melt mixing a fabric softener component and a carrier component to provide a fabric softener composition exhibiting a melting point greater than 90\xb0 C. After electric power is supplied again, a CD reproduction apparatus is used to playback a CD, and TOC information is used as a code C1. Thus, the sulfur poisoning of the exhaust emission purifier can be avoided while at the same time reducing the fuel consumption rate. The method involves determining that an audio session is desired and switching one or more computer components to a minimal interference mode prior to commencing the audio session. Accordingly, the combustion of the fuel and the cold start performance of the vehicle can be improved. A rotational coupling attaches the engagement fitting to an anchor member, allowing uni-directional rotation of said engagement fitting on the rotational fastener, relative to the anchor member, about the fastener axis, in a loosening direction of said rotational fastener, to prevent self-loosening of the fastener.