My wife took the SHO on a 600 mile road trip this weekend and wouldn't you know 20 miles from home on the way back she called me and said the low coolant light came on solid and she pulled off the road to find steam billowing from the right side. Thankfully, she remembered what I had told her about keeping a watchful eye on the SHO cooling system indicators, and she did the right thing: pulled over taking care not to let it overheat. I went down there to find coolant leaking profusely from the vicinity of the water pump. It took 6 quarts of H2O to fill the radiator. The pump wasn't making any bad noises, so I left the pressure off the radiator cap and headed for home. At 1/2 way point, I stopped and it took 2 quarts to refill. Made it the rest of the way ok with temperature in the normal range. The water pump was replaced 1000 miles ago with a rebuilt unit. Next week, I'll take it find out whether something broke or if I did something incorrectly. I'm glad it was nice enough to do this 20 miles out instead of 300 miles out! 
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