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Under the Hood
The 135i's turbocharged inline-six makes 300 horsepower and 300 pounds-feet of torque. It works through a six-speed manual or BMW's seven-speed dual-clutch automatic. Either car hits 60 mph in abo ...

Checking the coolant level
1. Do not open the hood until the engine has cooled down. 2. Turn the expansion tank cap counterclockwise slightly to allow any accumulated pressure to escape; then continue turning to open. ...

Oil types for refilling
Notes No oil additives Oil additives may lead to engine damage.◀ Viscosity grades for engine oils When selecting an engine oil, ensure that the engine oil belongs to one of the viscosity ...