I know it's not the recommended practice....that it's ideal to drain and flush the block and the heater core....but if ALL I were to do was drain the radiator, how much coolant would come out? Car is a 1992 300D, total system capacity is about 10 quarts.

Must admit I am tempted by the simpler procedure....especially being fairly confident that I have a clean system.

Thanks.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 159k miles
06 E320 CDI "Rutherford", Black on Tan, 179k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 145k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 77k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife