What kind of gas to use on a 2005 Bonneville Supercharge?
A technician at a N. Calif GM test facility explained to me that the computer module on the SSEi can adjust engine timing, automatically, for 87 octane fuel. However, when I know I will be driving in mountanous areas, I prefer to switch to 89 or 91 octane fuel, to reduce the possibility of pinging during long or severe uphill climbs, and, the engine feels a bit more responsive, to me. He suggested using a fuel with cleaning additives every 3-4 tanksful, also, to help keep injection system clean. That is more cost effective than pouring additives in your gas tank.
Whjch kind of gas to use in 2001 Bonneville V6 supercharge?
Something most people didn't seem to notice when they introduced unleaded gasoline was the drop in octane that occurred Premium went from between 95 and 98 octane down to 92, and regular dropped from around 91 or 90 down 87 or 88. For any high performance vehicle, premium gas should be used. For any vehicle which you wish to run well, premium gas should be used. Avoid using octane booster without expert instruction, because a…