It is necessary to look a little closer at the torque spec's. and realize there needs to be a clarification for "oil pan" as there is an upper and lower.

Haynes Manual pg. 58 Mercedes-Benz Diesel 123 Series 1976-1985

Oil pan bolt
10mm 30 Ft-lbs
12mm 52 Ft-lbs
[NOTE: the size of bolt mentioned.] This is referring to the Upper Oil Pan.

Haynes Manual pg. 85

Torque Specifications
Lower oil pan-to-upper pan bolt 7 Ft-lbs.

It is best to start with generic torque specifications and work from there........

M-6.....6-9 Ft-lbs........9-12 Nm/m
M-8.....14-21..............19-28
M-10....28-40.............38-54
M-12....50-71.............68-96
M-14....80-140...........109-154

I agree that there are a few things "out of order" as to where certain torque listings are made. This is due to their confusion with upper/lower oil pan listings. So you have to watch the size of bolt listed. That is why it better to start with the general torque ranges first.

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )