Had my first oil change a couple of days ago and may have gotten some valuable information from the Service Manager. When I got in the car and checked the oil level before leaving it showed half-way between min and max. I went back in and asked why it wasn't topped off since I got it from the factory that way. I was told that it is difficult to get to "full" because the difference between the min and max readings is only 1/2 US quarts. Any DYI oil changers know whether this is true? The only reason I ask is that it is potentially useful information if the low oil indicator light ever comes on so that I would not overfill. My first impression/gut was that min to max represented 1 quart.