Re: Heater hose routing
Correct, it's capped. Don't know about dry rot. In my truck, as it seems yours, doing a real inspection on that cap requires removal of the cobra elbow. Where do you have your return hose routed now?
I don't have any hoses at the moment. I removed the heater core a long time ago and just capped both the manifold and the radiator. The only reason I took a good look at the cap is I remember someone saying how theirs exploded and fluid went everywhere.
I'm doing my best to avoid capping it since I'm going to be running a K&N directly on the turbo which will end right in front of the cap. If it did explode, the turbo would end up sucking in a lot of coolant.
So, I figured I'd put the heater core back in and run the hoses again. I just couldn't remember how they went. I thought there was a special hose for the radiator end so that it would do an "S" bend around the orange tube in addition to the intent in the tube.
Just need to figure out how to route it with the filter on there as well. Every time I tried searching for heater hoses for Non-A/C S10 on the parts store sites, nothing would come up. It's like they never sold a Non-A/C 4.3 S-truck.