On my 602.96 I removed the bottom radiator hose from the radiator and collected all the coolant in a bucket. Then I drained the block by removing the block plug over near the turbo. Then, after disconnecting the top hose, I took my garden hose and flushed the radiator and as much of the block as I could. Also used the garden hose to flush out the resovoir at the same time. Once all that fresh watrer stopped dripping I buttoned it all back together, added 1 gallon of Zerex G-05 (gives me a 40% mix) and the rest water. My 602 vents air pockets to the reservoir so I kept an eye on it for a 100 mile or so.

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1993 W124 300D 2.5L Turbo, OM602.962
2000 Chevrolet Cavalier, 2.4L DOHC
2002 Ford Explorer, 4.0L SOHC
2005 Toyota Prius, 1.5L

http://www.fuelly.com/sig-us/40601.png

This is probably the single most important thing to do !!

Once you have filled it & started it & checked for leaks, take it for a run around the block (a mile or so) & check for leaks & the level of the coolant.
Then after you drive the car for a regular short run, check it again.
When you next fill with fuel, check it again.
If at any point in the not to distant future, the temp goes up unexpectedly or the motor gives other signs of being hot, check the coolant level & for leaks.
Its important to make sure that you have the heater operating when the car is first started to make sure it is filled with coolant.

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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

And I'd say that forgetting about the heater is probably the most common error resulting in "I've just changed my coolant and I now think my cooling system is leaking because the coolant level is too low" threads...

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Where EXACTLY on the 602 is the block drain?

I assume to do this I need ramps for front?

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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