Radiator Swap?
#1
#4
Personally I wouldn't trust something as important as a radiator from a junkyard unless it can be tested and is working 100% before you even take it to use it. Otherwise if you just take a chance you could be driving down the road someday, could even be a long ways from home, and suddenly your radiator clogs and starts to overheat your truck or springs a leak, or it has a lot of dirt and grime buildup inside your radiator which comes out into your brand new coolant fluid and could even push dirt etc. into your thermostat and clog that which will cause you even more problems. You should just be cautious and very selective of any radiator you take. At the very least you should definitely flush any used radiator out really well with hot water before you install it. Infact plugging up all the hose connectors and filling the used radiator with hot water and soap and letting it sit for like 2 hours then draining it out might be a good idea as well.