If you have to use a stop leak in the future try an egg-white.
No yolk, no joke.


"Iamfreezing" > wrote in message
lkaboutautos.com...
>I put in Prestone Stop Leak to fix a leaking rad. Well it also fixed my
> heater core. My heater core is clogged with this crap , and I have no
> heat. Any suggestions on how to clean this stuff out?
>
> Thanks
>