This is another question best answered by your owner’s manual. Then, based on the manufacturer’s recommendation found in the manual, have our service staff set up a regular schedule to make sure these appointments aren’t overlooked. Our goal at T.O. Haas is to inspect all systems in the car on a regular basis to make sure everything is operating at top efficiency. These appointments also give our mechanics the chance to identify small problems before large, expensive problems have a chance to happen.