We ran Nellie up to 2600 rpm without a hiccup. I spent a lot of the time looking over the engine. Other than a small oil leak near the base of the dipstick all was nominal. Even the Cummins' water temperature didn't go up much.
Once back at the dock the we found transmission fluid in the bilge. The smoking gun was a loose hose fitting at the hear exchanger. I apparently forgot to fully tighten it after changing the transmission fluid. The ATF level was topped up.
The heat exchanger's zinc was in good shape albeit covered in a hard, brown, mineral deposit. It was scrapped clean and returned to service.
The rear engine mounting bolts were tightened. Actually, I just confirmed they're tight as I couldn't budge them.
Things are looking good.
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