G'mornin',

While I was doing a bit of digital Christmas shopping, I purchased myself a copy of "Mercedes Benz Technical Companion" on Amazon for $26.xx (I forget the change amount).

I was browsing it last night and I just happened to stumble upon the answer to your question......

Ref. Mercedes Benz Technical Companion, page 11....

"All W126 series cars..........The distance between maximum and minimum marks on the dipstick equates to about 0.3 liter (10 oz)......"

There is a buncha info relating to checking the ATF.....and I have only breifly browsed this article......but from what I have learned, so far.....apparently there is some debate about the accuracy of checking the ATF.....we are supposed to be checking the ATF when the transmission is hot....80 C (176 F)....the marks on the dipstick are designed for accurate measurement when 80 C.......there is a nice chart and instructions on checking the ATF when the fluid is cold......20 C (68 F) - 30 C (86 F)......and about the improved accuracy of checking ATF when cool.....

SB

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Diesels:
'85 300D, "Max, Blue Benz", 155K, 27.0 MPG
'84 190D 2.2, "Eva, Brown Benz", 142K, 40.2 MPG
'77 240D (parts car)
'67 Eicher ES 202 Tractor "Otto" (2cyl, Air Cooled, 30HP)
Gassers:
'94 Ford F-150, "Henry", 170K (300 Six) 17.5 MPG
'85 190E 2.3, 148K....Parts Car
'58 Dodge W300M Powerwagon (Flat Fenders) Less than 10 MPG