anyone know of a good product to seal a coolant overflow tank (that leaks)
 

i just picked up a 89 mustang 5.0 about a week ago it runs nice (it's cool drivin a v-8, but gas prices aint cool) well the coolant overflow tank has a leak in it, i went to the junkyard and autozone and even napa... no one has a replacement for it, so my next idea is to find somethin to seal the leaks....any ideas????

Re: anyone know of a good product to seal a coolant overflow tank (that leaks)
 

Get marine epoxy. It will seal it up. It has to be clean and dry before you put it on. it helps to rough it up with some sand paper first.

Re: anyone know of a good product to seal a coolant overflow tank (that leaks)
 

jb weld. works wonders

Re: anyone know of a good product to seal a coolant overflow tank (that leaks)
 

---- yeah hmt style, jb weld everything.

but honestly id probably go for daves marine epoxy idea

Re: anyone know of a good product to seal a coolant overflow tank (that leaks)
 

Try using one of those radiator repair kits they are like 3 bucks

Re: anyone know of a good product to seal a coolant overflow tank (that leaks)
 

bulldog polyurethane, black tube

its cream colored and survives -30degree weather

Re: anyone know of a good product to seal a coolant overflow tank (that leaks)
 

would this hold up to the temp of warm coolant in the overflow?? and where can i find marine epoxy?i thought about that(---- jb weld worked for my blow off) but would it work on the plastic overflow??would this work for the plactic bottle?where could i get this at? and would it work on high heat? and plastic?




thanks for the help guys, but please keep the info coming.....i need to sell the car soon i cant afford to put gas in a v-8

Re: anyone know of a good product to seal a coolant overflow tank (that leaks)
 

JB weld works for everything.
JB weld that bitch. ;)

Re: anyone know of a good product to seal a coolant overflow tank (that leaks)
 

Just pick-up a normal set of 5-45 min epoxy. (JB weld is just an epoxy with tiny flakes of steel in it. It's not the best, especially when not used on a metal).
Be sure to clean the plastic with some rubbing, or denatured alcohol. Afterwards, lightly scuff the plastic up so the epoxy has a good chance to grab.


If you have a large slit, or tear, it's best to grab some fiberglass cloth & put it across the tear. Apply the epoxy to the cloth, then squeegy most of it back off.

Re: anyone know of a good product to seal a coolant overflow tank (that leaks)
 

use some man batter, it comes in a long white tube, it's hard to get out sometimes though