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QUESTION: Can regular fuel be used in the Subaru 3.0-liter, six-cylinder
engine on a regular basis?
ANSWER: The 3.0-liter engine is designed to operate using unleaded
gasoline with an octane rating of 91 AKI or higher. Regular unleaded gasoline with
an octane rating of 87 AKI or higher may be used on any six-cylinder model for the
2005-2007 model years, but the gasoline with a 91 AKI rating is recommended for
optimum performance and drivability.
Be aware that using 87 AKI rated gasoline could lead to reduced power output, poor
accelerator response, and reduced fuel economy. The effects depend on your driving
habits and conditions. Should you experience any of these effects, return to using
91 AKI rated fuel.
Also note that if your vehicle exhibits heavy or persistent knocking (pinging),
or if you have heavy loads or are towing a trailer, the use of 91 AKI rated fuel
is required.
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For anyone wondering what the sport of rally racing is like or who wants another
look at coverage of recent Subaru performance events, check out the Driving Sports
DVD series from SubieSport Magazine.
Contact: www.drivingsports.com
or call 800/DVD-0566.
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