Voted second behind the Ford Model T as the most influential car, the Mini was launched in 1959 by the British Motor Corporation and then taken over by BMW in 1999. The Mini Cooper debuted in 1961 as a rally racing car. Following BMW’s oil specifications, use only fully synthetic — Group IV and V, rather than Group III — 5W-30 or 5W-40 oils with an API SH specification or higher in any Mini Cooper in accordance with the European Automobile Manufacturers’ Association –the ACEA.

Castrol Syntec 5W-40

Syntec, made by Castrol, meets several of the criteria for ACEA standards and BMW LL — LL meaning “LongLife” — standards, including ACEA A3/B3 and BMW LL98. BMW’s LL system relates to the longevity and functionality of the oil. In practical terms, it means that you should drain and replace your car oil every 15,500 miles for LL98 vehicles and every 18,300 miles for LL01 vehicles, as explained by ACEA.