Attempted to break the block drain plug loose last night. Took a 3/8 extension filed down to 5/16 and a breaker bar. Came loose fairly easily. Some gunk came out so I'm happy about that.
Any concern running thermocure through a new radiator after I flush the block gunk with a few gallons of distilled? Also back flushing the Heater Core with some plastic hose.
@cpwolf, thank you. That's exactly what I'll try if I can just find a radiator that isn't discontinued.
Having trouble finding a radiator for the 98 with AT. Some 01+ models show barb fittings which isn't what I have.
I see this one, but what to do about the barb fittings?
https://www.wermopar.com/oem-parts/mopar-engine-cooling-radiator-55037653ab