Even though you’re a dedicated car owner, you may be confused about exactly how often to wash your car. How often is too often? Does it need washing in the winter as well as summer? What is an undercarriage flush and when and why is it needed? What’s the difference between various car wash locations? Here are answers to some of your most perplexing car wash questions. Reasons to wash your car, by the season Summer or winter, your car faces a tough environment out there. In the summer, there’s dust and the oil and tar drops that stick to your car as you drive past construction sites. Then there…