There's what appears to be a weep hole in the top. Does the water pump have two?

Water pump isn't sooo bad. $150 for pump plus about 4 hrs labor was a guesstimate from someone he contacted.

While researching this question, I read about the single timing chain being replaced by a double and an implication that it was covered by MB. If it was never done, any chance of MB covering a replacement at this milage?

Bob