Well, the Blue Devil lasted about 7 months, until shortly after I replaced the water pump due to a small leak I had noticed that was causing coolant scum to collect on the lower radiator hose after being flung off the pump, it was causing me to lose about a pint of coolant a week. After I replaced the pump there was a notable increase in system pressure, based on the how tight the rad hoses felt after warmup, apparently due to getting rid of the slow leak on the pump. All was well for about a week and then the floodgates let loose from the LIM, same leak as before, off the left side of the engine down onto the starter motor. Curiously, after a few days the leak tightened up again, no leakage for a few days and then back to Grand Prix Valdez. Finally had my mechanic do the LIM gasket replacement and all is well. It never leaked anywhere except out of the engine, never got into the oil or as far as I can tell, into the exhaust. I did end up replacing a clogged cat in April, which brought back all sorts of power I never knew the engine had, but it's not obvious that the clogged CAT was due to coolant, there has been no indication of any of that with the new cat after about 10K miles. While the car was in the shop for the repairs, I rented a new 2014 Dodge Charger SXT with a 3.6 V6 from Hertz for a few days. Great car, really fast, and nearly 33 MPG average at highway speeds, simply amazing from a 300HP 2 ton car, must have been the 8 speed auto tranny! Anyway, after I got the GP SE back, I was impressed how favorably it drove compared to the SXT. Obviously not as smooth shifting, but almost as quick on acceleration!
