Without taking anything off I can see coolant seeping around it when it's parked and it's been leaving a good puddle whenever I park it the motor is going to get a full rebuild or a swap out with a junkyard motor I'll rebuild but I'm looking for opinions on Alumaseal I've heard people say it's the best one that rarely damages anything else but I mean how hard do you guys think it'll be to clean out when doing the full rebuild? Is it worth it to patch it for now while getting everything in order?

 

It's okay.

But, the others are just about to leak also.

 

I don't think the Alumaseal is going to do anything for the freeze plug leak because that is not a passage where coolant pressure builds up and the Alumaseal then clogs the hole, which is what happens in the radiator. Basically the Alumaseal will go right by that leak. And now you have that crap in your engine.

 

Same one was leaking on mine. Took about 1 hour and 4 dollars to fix it. Fix it don't try and rig it even though temporary.