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.
A thorough tune-up should include the following: 1  A comprehensive cleaning of the condenser coils. Doing so increases efficiency (which directly impacts energy costs) and can reduce the wear and tear on your system.  Evaluation of the coolant level to help maintain peak operating performance.