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.
For grade O-8, with the same experience, the pay is $9,531 per month. On the high end, grade O-10, which is the highest grade, with over 40 years of experience garners pay of $18,937 per month. Members of the air force receive several allowances and benefits that vary by rank and location.