06-04-2014 06:49 AM
We are also facing the same issues with engine cooler core for our 3612/16 engines. Just wanted to know whether the real cause was sorted out? Is the marine grade oil cooler holding up? what is the running hours u got from these marine oil coolers?
09-15-2009 03:36 PM
We have four CAT 3520C. One of them had a recurring problem with copper in the engine oil. Right after the copper content increased, the engine cooler would fail. A second engine also had the problem occur. The local CAT dealer was out to investigate for greater than 6 months. Several oil coolers were sent to the root cause failure team for CAT. Each time we had another failure, the coolers were sent in and no word. Just the usual, we are in the que....
CAT kept paying for the new coolers, but it made a mess every time they failed. Oil got into the antifreeze stream, drain the systems.....
The fix was implemented a while back and we have not had a failure since. The fix was to install a marine grade oil cooler. We have since put them on all four engines.
08-04-2009 10:17 PM
06-10-2009 12:28 AM
05-20-2009 01:15 PM
I took your advice and called the cat dealer. They sent me to the oil lab guy and he said that it might be the engine oil cooler starting to fail. Eventually the cooper from the core leaches into the coolant and when the core just starts leaking into the oil it kicks the sodium up and shows high copper! He said the cooler is pretty expensive to replace and suggested that I resample in a short interval. He also said that I could take the radiator cap off, only when it was a cold engine, and see if there is oil floating on top of the coolant. He said that the oil is higher pressure then the water so if a leak is starting it will most likely be transferring oil into the coolant as well.
Sounds like good advice so I am having my guy pull a sample now.
05-19-2009 09:46 PM
To me, that is NOT a good th ing. I believe if you have a cracked block or head, you can get anti freeze in your oil that way. If I'm right that is not good. Not claiming to be the expert.
05-19-2009 09:12 PM
05-18-2009 10:23 AM