Quote:
Originally Posted by mpolli
The second drain is the block drain. It also has a little nozzle on it but it takes a 1/2" tube. You will want that one longer, about 14" probably. That one loosens with a deep 19 mm socket or a 3/4" works good also. It is located exactly where you cannot reach it from top or from underneath and definitely not if the exhaust manifold is hot! It is located beneath the exhaust manifold between #3 and #4 cylinders. I was able to drain 1/2 gal from there. If anyone knows an easy way to get to that drain let me know!
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Hey, thanks for the write-up! I'm about to do this with my 2000 C230... how did you get to that engine block drain? I took a look at it last winter and couldn't see an easy way to get to it. I'm vaguely tempted to just drain the radiator and put in a gallon of 50/50 mix.