Diesel Warm Up- Idle or Drive?

Most car manufacturers recommend warming up with a light load by easy driving instead of idling. Is this true for the diesel engine in a 300SD?
The engine seems to run cold and takes quite a while to warm up. Is
this a typical characteristic of diesels?
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As soon as the oil pressure is up get going. These diesels will not warm up idling and must be driven, idling a cold enigne will carbon it up.
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Hank WD5JFR
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My 80 300SD warms up about as fast as any other car I've owned. In fact, I'd say I get cabin heat faster in this car than in most others. I've always driven it after starting up, without waiting, unless it's very cold, like under 20. Then I keep it idling a little faster than normal, just at the point where it runs smoother for a minute or so before driving off. Then I take it easy for the first 5 mins or so, while it warms up.
If yours takes a long time to get to normal temp, I'd change the thermostat.
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Start it and drive off.
My diesel takes longer to reach 80 degrees C. than my gas car but that's the nature of a diesel's thermal efficiency vs. gas engines, IMHO.
Thomas Lambach '80 300SD, owned since new
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theres a whole lot of cast iron to warm up but i get OK heat after 2 miles and 80C at around 4 miles.
case
the case, minus a few cans!
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I wait about 30-45 seconds on my 81 300td. The oil is always pegged, and the engine has a good, solid sound. I agree that it's a Looonnnngggg time to get the thing warmed up while idling, even on a warm day. However, I do try not to jump out of my parking lot and do 60 at full acceleration while cold.
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The general advice is as already stated, to drive off immediately (or within a very short space of time) but gently until operating temp is reached. From previous discussions on this topic here it seems that the 'real' operating temperature is reached about 5 min after it says so on the dashboard instrument.
DAS
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Correct, this is what MB says. Idling to warm it up just clogs the prechambers with carbon.
MB says to never idle the engine for more than 5 mninutes at any time.
The engine is fully warmed up when the oil is at temperature, not the coolant. This is why Ferarris have oil temperature gauges.
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Not to mention only warming up part of the engine/transmission system giving rise to different metal expansion etc.
DAS
For direct contact replace nospam with schmetterling
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