Last month I bought an '83 300TD. The dipstick has a numbered scale on it, ranging from 0-110. I know it's not original to the car, simply because the first 3 number of the MB part number are 115. So I am assuming this came out of a 115 chassis. What I am real curious about is what do the numbers represent?

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member