Pulled out the CD - looked at section 20-010 - coolant.

124 car -> 9.5 litres with a/c & climate control which I suspect most have.

Do not be surprised after draining the block and radiator that you do not capture a full 9.5 litres or 10.03 qts or 2.5 gals. Easier for this gringo to think in terms of qts/gallons.

In my case draining the the block and radiator usually removes about 2.0 gals. I suspect the other half gal. remains in the heater core and related hoses.

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Mike Murrell
1991 300-SEL - Model 126
M103 - SOHC
"Fräulein"