So it means engine is already disassembled for overhauling purpose?? Is it a matter of concern? My car has a current mileage of 73k Km, what engine oil should I use? Previous owner was using 5W30 and mileage was 13~14 km in local city with AC. When he handed over the vehicle I noted oil level at the mid of max and min. My mechanic advised to use Zic 10W40 and after 500km still oil level is at max but my mileage dropped to 9 km within city without AC. What might be the issue? Should I switch back to 5W30? Which company? What if oil level again drops?
Sorry for asking so many things. Thanks in advance for your kind and swift reply.