^depends on how far you let this go, and how much coolant is in the oil.
Many cars can or do leak into the oil, and once fixed run fine still. Depends on how long its let loose doing its thing would tell ya how much damage can be inside the engine.
If it was going to spin a baring it would of done it already. Most likely, worse case, the water displaced enough oil that the bearings were ran dry so to say, and you lost some of your coating on them.
BEST way to tell if you have severe bearing damage or engine damage is drain the oil and when you pour it out, look at whats left int he bottom of the catch pan. Have some direct light on it, if it sparkles, or looks like your panning for gold, then you have a lot of copper in the pan, which is severe bearing damage. Also might cut apart your oil filter, you can read a lot from what it catches.
I have done lots of LIM gasket fix's on daily drivers, there was probably some coolant that got into the oil, but not enough to cause a failure right off the bat.
Don't panic till you see whats inside when you get it apart.
The ticking, usually almost always a lifter. Nature of the beasts a lot of the time. If it goes away, then your good to go, if it hangs around, then one or all might need to be replaced. It goes away once your cars pumps enough oil into it to shut it up. Once they are pumped up, they run quiet...on a normal engine.
~F~
