you can get an additive to seal up minor leaks but only as a temporary measure have it checked by a radiator shop asap
how do i fix a leaky sink
The mens room at our office building has a leaky faucet. Where can we information online on how to fix a leaky faucet?
Replace it
You can fix a leaky faucet.
duct tape it... yay!
You dismantle it and replace the seal.
you replace it
replace the seals
Brake it down
Replace window seals or if they are repairable you can fix them with silcone, it comes in black to match.
Replace the plug.
Take it apart and replace the main seal.