Does anyone have an odometer for an 87 190D 2.5 automatic?
Also, does anyone know an easy way to find out the gears in the rear end??

Thanks,

I can only help you with your second question.
Go to this link. The website provides the info for the auto towards the bottom of the page.
W201-190D25-Getriebe/en

3.07:1 appears to be your diff gear ratio

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).