Question about 2002 Chevrolet Silverado 1500HD

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What octaine of gas is recommended for a 2003 silverado 1500hd?

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As this car is computer controlled if you use the high octane you should get better mileage BUT you need to use about 4 or 5 tankfulls to get the average miles per tankfull then decide wether to go back to 90ron .(as i only do long trips in my car,using the highest grade gives me about 15% more miles per tank....MY figures.)

Posted on Sep 16, 2010

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1 Answer

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It sounds like your fuel filter is clogged. This often happens after you run out of gas because your engine sucks up all the gas in the bottom of the tank where dirt and debris have been collecting for years. I recommend changing your fuel filter and if that doesn't fix your problem, add some fuel injector cleaner to your gas.

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