Domestic brands have the most American-made content in the U.S. according to a new index released by American Universityâs Kogod School of Business.
A mechanic can clean or replace spark plugs during a tune up. Most new cars have platinum spark plugs which don't need to be replaced as often as traditional spark plugs. Mechanics can replace a dirty air filter during a tune up. A tune up includes checking and topping off an vehicle's fluids. A tune up is a relatively simple job that some people prefer to do themselves.
Tune-up schedules vary by car. Most cars made after 1980 do not need a traditional tune-up but they do need periodic maintenance. The owner's manual for a car will typically describe the best maintenance schedule for that car. In addition, most cars benefit from a 30,000-, 60,000- and 90,000-mile maintenance.