I had agasket go after only a'few hundred K's and it was because the headbolds hadent been retorqued... lesson lernt

If you purchase a quality "no-retorque" gasket, then you do not need to do it 100 miles/100 kms after replacement. With cheap gasket you may want to do it anyways.

Either way, Nissan recommends an semi-annual re-torque:
Quote:


Tech: Head gasket

The most important things are:
* Clean the block face, head face and bolt holes thoroughly. The gasket may fail is this is not followed fastidiously
* Use a torque wrench, tighten in stages, and according to pattern

Most failure are due to not using a torque wrench or following the stages. A lot of owners just guess, and sometimes it works, but sometimes not.

If your K's meant thousands than a few hundred would mean that you got your moneys worth out of your head gasket. but I suppose you are talking about kilometers.

make sure its not a corroded out timing cover and make sure all the water gallaries in the head are within limit

Hi Guys,.

Thanks everybody for valuable advices and help on. tomorrow i am going to tow it home,The heater gauge problem was there for few months,but i am pretty sure car didn't over heated and no even single drop of coolant from the radiator also, if that was the case i would have melted my engine,because of long distance traveling, cleaned the radiator also done last time,i saw the water drop before weeks time only, i think on that day the gasket would have blown ,

Thanks
Regards
Sumith