New owner of a 1990 B2600 5 speed. After pressure testing cooling system found the oil cooler (between the oil filter and block) to be leaking coolant. Not holding any breath on finding an OEM, well maybe just a gulp of air in case someone has an NOS part willing to sell. There is a slew of kits on the internet but difficult to say if they are a direct bolt-on and how they would perform. Looking for a recommendation, need the truck up and running...

 

Upon closer inspection found a small hole in the cooler pipe, will be taking it to a local radiator shop to see if can be welded. Luckily all the hoses and gaskets were available locally as well so hopefully some time next week I'll be rolling the B.