The tank on top of the shroud. I know it doesn't get hot hot but didn't want to have it melt whatever I put on there. I thought about the RTV but would that adhear to the plastic/pvc that it is made of? I will give the permatex stuff a try, its been bothering me for a while and I want to take care of it before the winter. Any prep other than cleaning the coolant off that I should take into account so that it bonds properly? Thanks for the help.

 

Just wondering if you ever found one cheaper than the $70 dollars that Dodge wants.

Anything aftermarket or from an alternative model?

Mine is leaking (under pressure) from the back of the filler neck and I need a new one.

 

What about using epoxy on it.

 

On my 04 the seam where the 2 plastic pieces are pressed together is leaking real slow. Tried jb weld on the whole thing and it still drips like it was before. I just ordered the new revised tank from mopar wholesale, hopefully I won't have to replace it again.

 

Mine was leaking around the top of the tank also, I just used some JB Weld then once it dried i put silicone over it. It may have been overkill, but this is a common problem and the cooling system has 16 psi on it so the glue you use has to be strong.

 

Mine was also leaking at the top where the spout meets the bottle. "Seal-All" worked for me.

 

Lots of times you can find used ones on threads where guys are parting out their trucks

 

You got a part number on this revised tank?


Thanks in advance.

 

The best thing to do, but requires some skill is to plastic weld it. You can use a soldering iron by itself if it's a hairline crack, otherwise you would need some filler rod. If you know what material the tank is you can purchase filler rod from places like McMaster-Carr. I've chopped up a milk jug (HDPE) to use as filler for what I think was ABS, and it kinda worked. It's best to match the filler material to what you are repairing if you really want it to work.

If it's a small crack, I would try to use a Dremel to cut a small v-notch in the crack without making a hole in the bottle. I personally would cut off the spout of the overflow, grind it up, and use it as filler material. Clean the area with soap, water, and a final isopropyl alcohol wipe before welding.

 

The problem I see with trying to plastic weld it is the material is so thin already you would likely burn through it.