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Is Oil on Spark Plugs a Serious Issue & What Causes It?

RepairSmith

How to Diagnose and Fix Oil-Fouled Spark Plugs? Diagnosing and fixing oil-fouled spark plugs can be tricky. If you’re not comfortable with car parts, let a mechanic handle this job for you. How Can You Prevent Oil on Spark Plugs? Use the correct oil grade to prevent it from bypassing the piston rings.

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