"itsdoingfunnythings" wrote in message
...
Do the oil additives stop oil leaks ?

not the ones that thicken the oil. but the one that are supposed to
'swell' the seals ?

if so , any ideas on a 'good' one ?

tnx - G ..

No, it's as bad as products containing PTFE claiming to help the engine.
They're all rubbish.