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.
The salary level for Air Force staff sergeants corresponds to the Department of Defense E5 level, whereas E6 is the level for Marine and Army staff sergeants. Army Staff Sergeant Salaries As of January 2012, the annual salary for an Army staff sergeant with up to two years of experience is $27,814.