Thread: Premium gas?
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  #9  
Old 08-31-2002, 06:09 PM
Jackd
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Interesting questions Stevenson.
Some cars electronic systems (I don,t know about Mercedes) will also slightly enrichen the fuel/air ratio to combat pre-ignitionif retarding the final timing is not enough At this point, MPH wold decrease slightly.
An engine running with slightly retarded ignition will not be damaged, although very prolonged condition could possibly induce more deposits in the combustion chamber.
JackD
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