All engines are being tested before they are installed in Cars,after watching all this discussion just went to Honda Abu dhabi Dealership where they are selling new civic these days,asked the question about this running they say there will not be any issues as the engines are crafted so well these days that there is no chance of any debris falling because of temperature changes and high revs of pistons,So guy i don't know the quality of Pakistani engines but still this is outdated,let me add this I work in a multinational EPC In Abu dhabi Oil n Gas and we installed power houses too and big pumps,nobody asks us to do the '"Running'' we put 100% load on first day of commissioning and then do rigorous testing tripping it all the ways possible ,putting harsh loads,overspeeding the Power engine,gas turbine there is nothing like this