See also:

Fuel specifications
Never use fuels labeled at the fuel pump as metal-containing. Do not use leaded gasoline or gasoline with metal-containing additives such as manganese or iron; doing so can cause permanent damag ...

Vehicle information
Owner's Manual Computer Vehicle ...

Convertible Faults
When the top is down, the 650i is truly magnificent. Very little wind intrudes on front passengers, and the car feels rigid — very rigid. Like a tank. The cruising experience is terrific right un ...