Liquid locked is only from a blown headgasket or crack in the head, or at least as far as I'm aware. Probably the gasket, since based on your original post it appears the issue got progressively worse. A crack in the head usually happens and just stays that way. I would demand a whole new engine if they try to tell you they want to fix it. There is a possibility the rod could have been ever so slightly bent when trying to crank it with the cylinder full of coolant.Yep, I went in yesterday and picked up my loaner. I asked for a bit more detail and they said it was Hydro-locked. Most likely from the head gasket. It never overheated or showed other signs of issues other than the times I mentioned in my original post. Two things interesting I noticed driving my loaner, a Hella-Yella JL Sport (3K miles). 1) Loose Steering - Super loose steering on the JL. My JTR has the loose steering and wandering, but man, this JL I think has way more slop/play in the steering wheel. 2) Gas mileage - My JTR was averaging 16.5mpg. The JL sport is averaging 24mpg! I hope my replacement engine will help improve my gas consumption.
On the gas mileage, is the JL the 4cyl turbo or the V6? Also is it the 2 door? A 50% increase in mileage is a crazy increase. Even with the JL being about 400lb lighter than the JT. Is that mpg from manual calculation or what the dash says? I've yet to own a car that actually calculates the average mpg per tank accurately. My manual calculations at each fill up are always 10-15% different from what the car says.