Dang! 

 

I'm not catching any breaks these days. Doing my weekend inspection on the truck and noticed my coolant reservoir is down to the add mark just about and then noticed the small drip puddles on the floor. Tracked down the leak to my oil cooler gasket is leaking. Hopefully, that is a fairly straightforward repair for that gasket. Any information on this task would be great.

Still in all... 360k miles and now losing a gasket. No big deal. I've got to get some time and order a gasket from Rocky Mountain Cummins. 

4 hours ago, NIsaacs said:

 

That sucks, I just checked my stock and out of three brands none are CES 14603. This is good to know, I have never heard of it, and this is from a 20 year log truck owner. Was this around in the 70's and 80's?

 

As far as pits in the cylinders/blocks, isn't that more electrolysis than anything? 

I honestly don't know when Cummins and other manufacturers started pushing maintaining molybdate and nitrites in coolant. My grandfather had a fleet of trucks when I was growing up and I don't remember testing and maintaining coolant but I do remember rebuilding a Cat 1693 due to cavitation of the wet liners. I think molybdate and nitrites probably came about some time in the 90's.

 

1 hour ago, Mopar1973Man said:

Still in all... 360k miles and now losing a gasket. No big deal. I've got to get some time and order a gasket from Rocky Mountain Cummins. 

How do your cylinder walls and inside engine block look? It's never too late to start using the proper coolant.