The 1920s were important for Castrol. They introduced this new logo in 1929 and the first non-stop flight over the Atlantic, a new world land speed record was set. All using Castrol Oil. Castrol Oil just became the world's fastest oil.
In 1966, Castrol was purchased by Burmah and the name changed to Burmah-Castrol and this new logo was released in 1968. Castrol continued to sponsor many things, from motor racing to land speed records.
In the year 2000 Castrol was purchased by BP Plc and has continued to grow and grow. It now operates under the name of Castrol and again is instantly recognised the world over. You can see their new and current logo below.