Castrol Classic XL 20W-50 is a conventional multigrade engine oil of good all round performance, formulated with high quality mineral oils plus selected additives, ideally suited to older technology and classic car engines. Castrol Classic XL 20W-50 is designed to meet the motor manufacturers' requirements for passenger cars and motorcycles running under normal service conditions, but excluding those equipped with catalytic converters. The prime recommendation is for pre-1980 petrol engined vehicles requiring a high quality product but with an older technology additive formulation.
XL 20W-50 is suitable for use in automotive gasoline and diesel engines where the manufacturer recommended an API SF/CC or earlier specification 20W-50 lubricant.
