There can be couple of tricks that you
Switch back to the same oil again if
there was no leakage with that.
Instead of replacing head gasket,
observe closely if its Tappet Cover gasket is leaking? If so, then its quite
easy & simple to change the tappet cover gasket (also called Jain).
Liqui Moly has product called “Motor
Oil protect”. Its 350ml and cost Rs. 750~800/bottle. Next time when you change
the engine oil, add one bottle of this. In my car the oil start leaking from Fly-Wheels
(the junction between engine & gear). Mechanics told me that its main seals
are leaking and engine will be unmount and open, Gear will be separated, then
they will change the seal and fix again. The cost of doing this was 15~20K.
I simply add this one bottle of
Motor Oil Protect in last engine oil change and problem was fully solved.