Octane ratings are posted on fuel dispensers. CAUTION: Follow the fuel recommendations in your vehicle owner's manual. If your vehicle requires premium 91 or higher octane fuel, use a premium grade of gasoline. The least amount that's necessary to prevent detonation (spark knock). On most vehicles, that would be regular unleaded 87 octane gasoline.
The basic pay for any member of the U.S. military is based on two factors, rank and time of service. For an Air Force E-4, pay begins at $1,947 a month, or $23,364 a year, for those with less than two years of service.
Air Force Staff Sergeant Salaries. An Air Force staff sergeant begins her career at this rank with the basic E5 salary of $25,480 per year. After four years of service, the basic pay for this rank increases to $29,851 per year. An Air Force staff sergeant with six years of service receives a base salary of $31,946. The top salary for an Air Force staff sergeant begins after 12 years of service, and it is set at $36,155 for 2012.