In defense of Dave here, are people not understanding that the calibration is ONLY GOOD FOR YOU!!?!?!?!Eugene Dave ,
On my 2012 tdi calibration is easy. When the sensor reads max, the oil level on the dipstick reads just a hair over halfway between min and max. Calibration done. Period.
That means that you can NEVER sell this vehicle, UNLESS you sign a piece of paper that says that you will FAITHFULLY tell the new owner that full ON THE DIPSTICK is only halfway between min and max. And, IF you do NOT abide by these rules, you are forbidden from ever selling the vehicle. PERIOD.
The calibration is ONLY good for you. Hell, it isn't even good for your significant other, UNLESS you also take an oath of disclosure that says that you let them know that full is halfway between min and max.
But, even if you do ALL of this, at the end of the day, if the other person forgets that they have been informed, you're still using a tool that is worthless, because there's nothing on the tool indicating that full is halfway between min and max. Full is full, min is min, max is max, on the TOOL that you're using, for everyone else but you! FOREVER. YOU'RE THE ONLY ONE THAT KNOWS!!!
It reminds me of a dial caliper that we used to have at work in QC of all places! The jaws on it were messed up somehow, and you had to add .004" to all readings. However, we did have a "tag" on the caliper that said "+.004". I finally refused to measure anything when I went out there, unless I took my own calipers. You would read the reading, and then you would have to "calibrate" the answer to find out what the actual reading was. And, if you didn't do the math right, you STILL had a bad reading. I think that we finally told someone to take them home for home use, and got a new pair of calipers. AS A TOOL, THESE CALIPERS WERE WORTHLESS, JUST LIKE THE DIPSTICKS THAT YOU ALL ARE "CALIBRATING".
Dave's analogy of the tire shop was spot on, and exactly the point that he's been trying to make since the beginning...