How to stop oil leak ?

[bazet]

My M20 now is leaking..head gasket already worn out...well how to stop the leak ? I'm using Shell Helix Plus 15w-40. Any proven aftermarket additives that can stop the leak,..or I have to use super thick mineral oil ?

 

[bravosx]

STP has this engine stop leak oil available in the market. But it's just for temporary use only. Also depends on your head gasket i reckon. Easily available at any spare part shop.

 

[panda]

Try using the thicker 20w/50 first. If still cannot...put a super thick oil addictive. It will work.