Engine brake troubles need some input

[Nater1977]

Well, something strange is definitely going on here. I did order that 215° thermostat remove the old one and it was flopping around inside with the C clip dancing around in the tube with the thermostat. It’s not even installed correctly. Reading about as Rawze stated you cannot run an engine without this thermostat. It will bypass the cooler so I have to figure out what is going on here. Went to try to install the new thermostat and I can’t get it to seat. It’s like it’s almost too big. I have to get in there and investigate and see what’s going on. Maybe there’s a burr from the old one banging around. Also, the C clip seems to be too small that came out of it. And I believe this is supposed to be a dual cooler when it is a single, someone’s been in here messing around for sure. I know there’s a TSB on the Oil coolers in parts change.