Spun bearings and seized engines might be from this

[Dawgz]

So we all know the plastic Y connector leaks...but I think that when it leaks it causes some of the coolant to drip onto the turbo oil return lines on the oil return cover and some of it might be making it past the gasket and into the oil sump.

I recently discovered mine was leaking, I remembered that my catch cans would have so much captured vapor, most of it looked like water. Pic before looks like milk chocolate.

After correcting the broken Y, the catch can shows only oil captured. So if there is water being mixed into the oil, it degrades or hinders it's ability to protect critical components like bearings.

Just a thought....

[Dawgz]

How it looks like after fixing the connection

[argento]

Wow, that tells a vivid tale. Thanks for sharing!