if its leaking from the head gaskets. The gaskets need to be replaced. If you dont have the proper tools it is going to be a huge pain. If leak continues try tightening the bolts around the headers and sparkplugs
Repair the pipe of fixture to stop your leak.
Replace the line that is leaking, and do not try any stop leak.
A raw egg in to the tank.
A good stop leak product for a radiator is the Bar's line of stop leak. It comes in an easy to pour bottle which seeks out leaks and seals them in minutes.
Most stop leak additives do nothing but empty your wallet. Replace the gasket that is leaking.
you fix the leak
You can use an oil stop-leak product to stop an oil leak on your 2002 Peugeot 206 1.4.
Read the directions on the container of stop leak. There are many stop leak products out there. Keep in mind that this is a temperary fix at best. I suggest that you do not. It causes more harm than good.
use leak stop or something. Where is your oil leak?
Depends on how severe the leak is. If it is a bad leak at the pump, then you more than likely need to replace the pump. If it is leaking severely at a hose, the hose needs replacing. If it is a very minor leak, you can try a PS stop leak, such as Lucas Power Steering Stop Leak. This may or may not stop the leak.
Pressure test the system and repair the leak. Do not use a stop leak.
Repairing the section of pipe that is leaking will stop a leak on a hot water line.