About Medical Services BureauThe Los Angeles County Sheriffs Department Medical Services Bureau is the largest correctional medical services provider of its type in the world, and the second largest unit of command in the Los An.
Technical Service Bulletins, or TSBs, are the way that car makers notify their dealer service departments of known problems with specific model vehicles. These bulletins are also available to independent garages, owners, and do-it-yourselfers.
Â® The API Service Symbol, also known as the âDonutâ 1. Performance Level: Gasoline engine oil categories (for cars, vans, and light trucks with gasoline engines): Oils designedfor gasoline-engine service fall under APIâs âSâ (Service) categories.