Technology to match your machine. Today's touring, sports and V-Twin motorcycles operate on the razor's edge of power, performance and reliability. Combined with the rigors of using unleaded gas, motorcycle oils must include the latest technology to keep up with the demands of today's motorcycle engines. Their revving and hot running engines need a lubricant made to handle these punishing levels of stress. Since 1911, Castrol motorcycle oils have dominated the World Racing Circuit. Trust Castrol, a motorcyclist's best friend.