Took my Vehicross on a long holiday drive last week, started losing coolant noticably, but I couldn't find any leak. I assumed it was a radiator issue so I topped it off and resolved to pressure test when I got home. Unfortunately at our last stop the car would not turn over in the morning. I cranked it and the engine turned about 20 degrees but no further. Then a seal blew out at the bottom of the crankcase and dumped all the coolant on the parking lot.

Looks like a coolant leak into the crank case that was slowly getting worse, then suddenly blew and flooded the engine overnight. Didn't lose any oil, just coolant. That explains some intermittent cat warning light and rough start issues I had earlier last week. I assume the only solution is engine rebuild? If so I might take the opportunity to upgrade my 3.2L JDM engine to the 3.5L you guys have (20% more torque); I can see a 3.5L 2nd gen Trooper for sale near me with only 60K on the clock (my VehiCROSS has 90k).