Decisions.... Need advice

[masseyharris74]

Hello, I'm a new member who has learned a lot from this forum. Thank you

I recently bought a 2012 KW T800 day cab with a 450 ISX cm2250- 570,000 miles, stock. The truck was from auction with a couple others from same fleet from New York state.
-I realize the risk of site unseen internet auctions, but for $25K, I thought it was worth a try. It is setup perfect for what we want on the farm. Very sharp clean truck, tight chassis. The truck made the 850 mile journey to Illinois fine, but I noticed a little coolant loss. I fixed a couple of external leaks when I got home, but I took it to my local shop to pressure test the egr and remaining system. On the way to the shop after adding some coolant, it puked quite a bit of coolant out the overflow.... The egr tested good, so it looks to be (head gasket, cracked head, cylinder, deeper issue, etc?)
I sent in an oil analysis, but still awaiting the results, (though I do not know what brand/type of oil was in it, mileage, etc.   ..) It was not obviously milky or smelling of coolant at least.

Before taking it to the shop, I went through the EGR tuneup as described and it really looked pretty clean overall. The DPF and DOC, and DEF doser looked good as well when disassembled.


What are my options?
1- take it back to another auction
2- drive it for a while as is... see if it gets hot under a load. I have not licensed it yet. we put less than 15K miles per year on our farm trucks
3- spend money and overhaul the engine and know what I got then with a warranty... (though it is hard to spend more on the motor than I paid for the whole truck...)
4- reman motor? too pricey?
5- overhaul and delete the mandate?

Would anybody recommend any shops in North or Central Illinois for this type of work?

Thanks