Recommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred to as spark knock, might be heard when driving.
If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.
See also:
Recalling RKE Memory Positions (Memory Remote Recall)
The Memory Remote Recall feature can recall the driver seat, outside
mirrors, and adjustable pedals, if available, to previously stored RKE Memory
positions when entering the vehicle.
Every time ...
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). See Fuel E85 (85% Ethanol) . For all other vehicl ...
Powertrains
Direct injection technology helps the Cadillac CTS offer more power while
maintaining fuel economy and lowering emissions. It delivers fuel more precisely
to increase the efficiency of combustion. ...