Mine is not very old, I jumped on the water about a year ago.
This started as an attempt of doing a high performance copper heatsink given the absolute absence of quality ones on the local market. I soldered pins made of stiped electrical wire to the base.
After some months of use, being very tired of my fans noise, I modified it for water. Made a case with flat fiberglass plates bonded with quick epoxi and brass pipes. It did a good job for about 6 months until it started leaking; the quick epoxi was softened by the water until one of the brass pipes comes loose.
Fortunately there was no damage.