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86 300E - How often do you change your spark plugs?
How often do you change your spark plugs? I recently changed my spark plugs on my 86 300E after 15,000 miles (1yr). I read a post somewhere on this forum that spark plugs don't need to be changed until after 30,000 miles (2yr). Is this true?
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JR
1986 Gold 300E 4Dr automatic
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