Quote:
Originally Posted by dugald
Yes, my 86 does.
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That's why the resistor was put in. MB added it to counter all the times that owners would run lower octane and take it to the dealer to complain of pinging.
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 1987 560SL
85,000 miles
Meet on the level, leave on the square. Great words to live by
Were we directed from Washington when to sow and when to reap, we should soon want bread. - Thomas Jefferson: Autobiography, 1821.
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