1994-2002 [Subscribe to Daily Digest] |
the owners manual for the 9-3 SE states that premium 93 octane is the recommended fuel so I think your dealer is misinformed. Burning more carbon ?. Octane rating in fuel as far as I know has nothing to do with carbon buildup. Carbon buildup usually occurs more frequently on a vehicle that is subjected to repeated short distance driving were the car doesn't reach optimum efficiency (ie heat range) so it's always a good idea to take a long drive every so often.
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