I fire up, wait a moment for the oil pressure do go up and drive. Generally I have to wait in traffic for about 5 min right outside my home. By that time the car has reached 70*c or 82*c. I also refrain myself from going over 2000 rpm if the water temp hasn't reached 82*c.

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1992 Mercedes 190D 2.5 turbo 5sp manual. EGT+boost gauges. Boost controller set to ~14.5 psi. 1 1/4 turns on full load adjustment. LPG injection. Next in the list is water injection.