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Premium vs. Regular and the catalytic converter?
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05-10-2008, 07:42 AM
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Glide Ride
BenzWorld Member
Date registered: May 2005
Vehicle: 95 s320
Location: Atlanta
Posts: 78
While not worth it to me, a compromise is to buy 1/2 93 octane and 1/2 89 octane. This will give you 91 octane, which is what the manual calls for.
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