Wheel alignment and front-end alignment are often used interchangeably by professionals. Both require the same process, but they refer to the number of tires being aligned. Front end alignment involves aligning only the front two tires

Run the engine fuel-lean, that is, use excess air. It is well known that fuel-lean running improves the efficiency. In the old days, under cruising conditions, the engines always ran lean – about 15% excess air this was economical

As a general rule of thumb, you should wash your vehicle every two weeks. That is if you're not driving down dirt roads daily or in an area where salt is used on the highways. This is under normal wear and tear circumstances