no, theres no warrenty on the car, but there is on the repair work done.

If theyre just using stop leak then im gonna take em to court, i paid an arm and a leg the first time, now granted ive gotten my moneys worth of labor and parts due to this whole thing, but still...

and i think they have been replacing the heater core, but i dont think the leak is coming from the core itself, its gotta be in a connecting hose somewhere, or a clip that gives out.....i dont know, im about to have the thing bypassed if that will fix it for good.