The length of the Mississippi River is approximately 2,320 miles (3,730 km), slightly shorter than the Missouri River. The Mississippi and Missouri Rivers combine to form the longest river system in the USA and North America. It is also the fourth longest in the world.
The national average price for regular unleaded gasoline sits at $2.16 per gallon, which is the lowest mark since April and the lowest price for this date since 2004. Todayâs price is five cents less than one week ago, 15 cents less than one month ago, and 56 cents less than the same date last year.
Check your vehicleâs ownerâs manual to see what your car manufacturer recommends and simply go with that. If regular unleaded is all your car needs, donât spend extra on higher octane gas. Your vehicle likely will not see any improvement in performance or fuel economy â itâs not a âtreatâ for your vehicle!Premium Unleaded (91+ octane). This type of fuel has a higher octane level, typically between 91 and 93. For example, regular unleaded might be around 87 octane while premium would be 90 or 91.ven at the gas pump we face a choice â premium unleaded versus regular unleaded. But at the gas station, many of us donât know the difference or which is the better value. Hereâs all you need to know about each type of gas. Regular Unleaded (87 or 89 octane). This is the standard and cheapest option at the pump.