Is premium fuel worth the cost?

[ahlam1399]

http://img-s-msn-com.akamaized.net/tenant/amp/entityid/BBGKqnI.img?h=100&w=100&m=6&q=60&o=f&l=f&x=1670&y=975If your car recommends, but doesn't require premium, you'll most likely see improved performance and efficiency with higher octane fuel. But, the extra cost might not be worth it.

أكثر... (http://www.msn.com/en-ca/autos/ownership/is-premium-fuel-worth-the-cost-yes-and-no/ar-BBGMxsH?srcref=rss)