Shaws Service Station - Castrol Service Centre in Rhyl. Shaws Service Station is proud to be part of the Castrol Service network, backed by over 125 years of Castrol’s engine lubrication expertise. We provide Class 4 MOT testing, servicing and repairs for all makes of cars and light commercial vehicles, using high-quality OE-spec materials. Our spacious facility includes four ramps, a dedicated MOT bay, advanced vehicle diagnostics, air conditioning servicing (latest gas types), and secure vehicle storage. Trust our experienced technicians and exceptional customer care. Call 01745 339889 today.