why is it the worst thing to put in after you drain the radiater and before you go for a ride?

~Nate

When I first got my car it had what looked like Dexcool in it. So I bought some flush from Autozone and used that. Then I ran water in it and drained that a few times. After the water came out nice and clear I refilled with MB coolant and it seemed to work good.

My coolant change is coming up this spring and since I have replaced much of the cooling system since then and I know everything is clean I won't flush. I'll just drain the old coolant and refill with the new stuff. Maybe if I go nuts I'll refill with water first and use that as a flush.

coolant change
 

I just did a few repairs that required me to remove the radiator, and I was about due for a coolant replacement so I was wondering how to correctly do everything. This is an 88 300E.

Is Mercedes coolant premixed 50/50? I didnt quite understand their "instructions" as they were more like precautions.

Also, how do I drain the block?

Does anybody know what my total capacity is, or know how I can find out?

Be careful with used coolant

From: Repair Tips, Short-Cuts

Haasman