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Re: Curious about spark plugs
Your number 1 cylinder is probably burning oil to some degree and the 3 and 5 are not burning as much.
Is the engine a 3.1? how many miles?
Wife has a 91 lumuna APV but I think the engine was changed before we bought it a few years ago. Can't determine the age.
Put some oil additve in the crankcase that removes carbon and sludge then after a week change the oil again. Sometimes this helps frozen rings and valves.
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