i put a new radiator cap on, and drove it for 30 miles card did great. then shut it off, let it cool down. and drove it again but it overheated again all the way to the red in less than 2 miles. there is a small leak at the bottom of the radiator from a plastic screw looking plug. is that normal...please help i need to get to school and back.

That plastic thing is probably the radiator drain plug. Tighten it with a coin. See if that stops the leak.

Sixto
91 300SE
87 300SDL
83 300SD

Do you have the CORRECT radiator cap on it?

Have you checked the thermostat?

Mike

__________________
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1979 300 SD
350,000 miles
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1982 300D-gone---sold to a buddy
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1985 300TD
270,000 miles
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1994 E320
not my favorite, but the wife wanted it

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After correcting the leak. Let it cool and recheck the coolant level.

Good luck,