How much coolant level drop do you experience after coolant replacement?

As some air goes out of the cooling system, the level drops.

In my case, I added almost 1 liter in a couple of months to compensate for the the level drops. 1992 300D. 275 k miles.

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1992 300D 2.5 turbo diesel. 319 k miles.
124.128 chassis, 602.962 engine, 722.418 tranny.

Remove one of the temp sensors at the upper radiator hose fitting when filling with coolant so there's less air to bleed.

I don't know how much you drive in a couple of months but I'd expect the system to self-bleed after 3 or 4 starts.

No leaks? No billowing white smoke?

Sixto
93 300SD

Last coolant replacement: June 9, 2006. 269549 miles.

Last top off: addition of about 450 ml. October 8, 2006. 274936 miles.

Do I have slower air bleed due to slower engine speed (diesel)?

No white smoke.

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1992 300D 2.5 turbo diesel. 319 k miles.
124.128 chassis, 602.962 engine, 722.418 tranny.

the air is trapped til the t stat opens. to open it the car needs to be warm enough to open it. another way is to take off the upper radiator hose and fill from there.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.