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

~Nate

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95 Honda Shadow ACE 1100.
1999 Plymouth Neon Expresso. 2.4 swap, 10.5 to 1 comp, big cams. Autocross time attack vehicle!
2012 Escape, 'hunter" (5 sp 4cyl)

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.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

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

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)