See also:

Fuel E85 (85% Ethanol)
Vehicles that have a FlexFuel badge and a yellow fuel cap can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85). For all other vehicles, use only the unleaded gasolin ...

Engine Oil Additives / Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all that is needed for good performance and engine protection. Engine oil system ...

The Inside
Where it counts, the Verano's interior feels plush — somewhere between a compact and a luxury car, but closer to the latter. Similar money could get a well-equipped Cruze or Mazda3. The Buick is ...