I've had three Roadsters over 12 years. I've always done my oil changes from below, using a low-profile 10 quart pan. I don't jack the car up, I don't park it on 2x4s, etc.

How much do I get out? Let's say this: I put 8 quarts back in and am at 85-95% of the way to the highest mark on the dipstick. Am I getting 100% of the oil out? No clue. Don't care, cause there is no reason to care - my oil is changed every year at around 1800-3500 miles.

Back when I drove the Graphite year round, I changed it at 5000 to 5500 miles for all the reasons Mr @BrushRoadster explained so well.


MANY use the pump-thru-the-dipstick method. I disagree with that technique, but admit it is as good as my way and potentially better than my way. It is certainly easier than my way. But again, there is no reason to care if you are changing it more often than the BAD ADVICE of every 7000-10,000 miles.