Of which major formula one team is shell a sponsor?

Shell is a sponsor for the Scuderia Ferrai team. Scuderia Ferrari was founded in 1929, and raced for Alfa Romeo until 1939. Ferrari first competed in F1 in 1948 (the team's first F1 car was the Tipo 125 F1), making it the oldest team left in the championship and statistically the most successful one (with a record of 15 drivers' championships and 16 constructors' championships won). The team's numerous and ardent Italian fans are known as tifosi, though the team also has a vibrant international following.