Ronnie Schreiber
2010-08-10 16:45:53
Premium is recommended, but GM clarified that the combustion engine in the Volt has a knock sensor and the ignition timing is adjusted accordingly if you run regular unleaded.
GM is aware of the potential problem with stale fuel and has said that they have a solution. Modern flex-fuel systems constantly monitor the chemical composition of the fuel (it’s pretty cool technology and involves an infrared spectrometer) and the engine control computer adjusts the fuel injection, ignition timing, and valve timing (on cars with VVT) accordingly.
