Hey gang! I have a 2018 Ford Mustang 2.3L 4v car that I think needs spark plugs. I did some research and it says that every 30-40,000 miles I’m suppose to replace. Is this true? I’m at 55,000 so I’m due for a spark plug replacement so I’m going next week. Please advise on proper up keep and maintenance I’m new to the Mustang world and would like my Mustang to run at optimum performance at all times! Thanx gang!