If your trips are short, or in dirty conditions, or you tow it is severe. Since you drive about 45 min, your engine becomes warm and excess fuel tends to burn off, even in typical suburban driving, such as driving for a mile or two and stopping of 1-3 min at a light. If you are a typical Atlanta commuter who spends 10-15 min to get to the freeway, is on the freeway for 20 min, then has another 5-10 back on city streets, that would indicate normal conditions. As long as you have a 20-30 min fullish highway speed drive about once every week or two, you should be fine. You should do a used oil analysis at 4K or so to see if your have excess fuel in your oil.
