Are You Truly Equipped to Maintain Your VehicleShare:FacebookPinterestTwitterMail14.How often should you replace copper spark plugs?47%Next Correct Incorrect Iridium spark plugs are superior and can last more than three times longer before needing replacement. 14.How often should you replace copper spark plugs? Every 10,000 miles Every 100,000 miles Every 30,000 miles Every 50,000 miles 47%
