Q: I had a minor oil leak on one of the six cylinders did tuneup putoil firing plug on 1990 Mercedes-Benz 300SE

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replace valve cover gasket now it has better pick up but seems like I always need to add qurt of oil Should I replace all the spark plugs with oil Fire plugs??
(1) Answer
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You need to find out where that out is going. Do you see smoke out of the tailpipe or drips on the ground?
No No white smoke and after replaced Valve cover gasket I do not see leaks but I still need to ad oil
most of the time ?? PS I never had an oil change since I had car over 1 yr because of the oil leak should I go back now and get one ??