Date registered: Aug 2009
Vehicle: '72 250C, '74 280C, '85 500SEL, '81 300CD.
Location: Tucson, Az.
Mentioned: 3 Post(s)
Quoted: 70 Post(s)
Another option is to remove the hood release cable assembly, "Sawz-all" the radiator uprights, install the engine assembly and weld the support back into place.
I use the Delo diesel rated oil (Chevron Delo 400 as 15W-40) but the Rotella brand oil is fine also.
You can use water as coolant for the first engine warm-up, re-torqueing of bolts and water leak testing but dont use it for any length of time. In your climate I'd hate to see you doing all this work and then lose the engine due to some unforeseeable incident.
Keep the RPMs low, (below 5000 RPM) avoid "jack rabbit" starts and try to avoid long distance runs at a constant engine speed for the first 1K miles or so. Change the break in oil after the first 1K miles, inspect the oil and enjoy the car for the next 30 years or so until you have to do the job all over again.