Thanks for your response
Most of my driving's on freeways in city traffic (San Francisco Bay Area). I also do runs down to the Los Angeles area (have family there, although I wind up taking my pickup truck often as not).
Is there a noticeable fuel mileage difference between the SD and the D/TD? Any "raw" numbers? I'm sure they won't translate exactly; everyone has a different driving style...but it'll at least give me an idea on what to expect.
Thanks again!