oil cooler failure

[Big D]

....what is the failure rate of these stock U shaped coolers...and if there is a better cooler out there,...

They're pretty well built. What I like about them that you don't see in many other stock units is that they come with anodes. I also like their placement and the ease of which they can be drained which is very important up my way. If these are serviced properly, they should outlast other oil cooler designs that don't incorporate anodes. The only issues I've run into with these is not replacing anodes; when they reach a certain point in life, the anode's material will simply crumble into pieces, then clog the water passages causing you to run a little hotter than normal. As with any other cooler, there is also the issue of clogging from organic matter in the raw water which will produce the same symptoms. Any style unit with the same rating will work though and will likely be much cheaper, you'll just have modify mounting. The wallet and your desire or not, to keep it original will dictate.

[guglielmo6160]

ok, sounds good,
Ive confirmed the failure of this cooler, I removed it and tested it, and its bad,
leaks and lots of oil residue in the water portion of it, and all inside the tubing,
its time for new ones.
I already ordered two of them on the net, and will replace both as soon as I get em

[Big D]

G, glad to hear you found the answer, and happy that it wasn't something more serious. While you're at it, order a few anodes also, and check them every once in a while. That should prevent this from happening again.

[BobCT]

Good idea, I replaced both of mine before they failed based simply on age. Sold them as working take outs so I recouped some of the money. Can be a catastrophic failure underway and just didn't want to risk it.


Bob

[guglielmo6160]

will do , thanks for all the support and excellent info.
I also found something else, my trans was a qt low as well, so I guess the atf was being sucked out the exhaustas well. I climbed out on my swim platform and stuck my hand in my exhaust and found I thought was a very oily and greasy assy. So Im guessing this was the culprit. what I still dont understand is how this much water got in while not running,
and not to sound stupid,but where are the anodes? I dont see em.

[BobCT]

there's one in each oil cooler and same for the heat exchanger (s). Look for brass/hex fittings. They don't jump out at you. The port side oil cooler is easier to see if I recall as is Stb side heat exchanger.

Then it's opposite for the remaining two because they're harder to get to on the other side of the engines. Expect some raw water to drain out of each when you remove them. Not much on the oil coolers, about a cup on the heat exchangers.


Bob

[guglielmo6160]

thanks,
will do
I took the boat out again today and cruised for about an hour
came back and inspected the oil and trans fluids,
not a drop missing or contaminated, Love it when a plan comes together.
again, thanks to all for the good info.
here is the video I took with my cell phone,, this afternoon while in the gulf,
please disregard the audio , turn your speakers off , or way down
the wind and my stupid comments are irritating, and the video quality is quite poor, but had fun anyway


http://www.youtube.com/watch?v=LZ3n89SC ... e=youtu.be