7 Car Maintenance Myths Dealers Want You to Believe

When you buy a new or used car, the dealership service department becomes your primary source for maintenance advice. But here is an uncomfortable truth: dealerships are businesses, and service departments are profit centers. While many dealers provide excellent, honest service, some of the "common knowledge" they promote serves their bottom line more than your car"s longevity. Here are seven maintenance myths that dealers want you to believe—and the truth behind them.