Thermostat gasket leaking AGAIN!!!!
To the OP.....listen to Cruze 418... and me. I had the same problem... constant leaks leaks leaks. Then I saw an article IIRC, in Mopar Action magazine. They did a story on your same problem. The CORRECT fix? A guy named Terry in Canada ... (Ontario?) Terry's Auto Lab is the name of his business. He developed
a thermostat housing very similar to the one, that Cruze 418, mentioned in his earlier post.
Billet aluminum housing with the O-RING GASKET! I bought one from Terry for my 360 '71 Duster....and as Cruze said...no more leaks, no more using messy/sticky goop, no more antifreeze cleanup.... just installed it, per the instructions.... and NEVER leaked ever again. Do yourself a huge favor, stop farting around with stock t-stats...get a O-RING style housing and enjoy life.