He used to drop into my chambers once in a while to smoke, and was first-rate company. When I gave a dinner there was generally a cover laid for him. I liked the man for his own sake, and even had he promised to turn out a celebrity it would have had no weight with me.
The owners manual on every vehicle should state how often the manufacturer recommends that you tune up cars, but as a general rule it is every two years or 30,000 miles, whichever comes first. Driving under extreme temperature and weather conditions will make parts wear out faster, however.
Replace spark plug tubes. The replacement of your spark plugs and spark plug wires (where applicable) is a basic tune-up procedure for just about any car on the road. I recommend replacing your spark plugs every 10,000 miles, or about once a year.