after so much research, finally i have used the FULLY SYNTHETIC 5W-40 Engine Oil from LIQUI MOLY today. They claim its drain interval to be 18000km/6 months whichever comes first.
FULLY SYNTHETIC 5W-40 (4 litre) = 4200 PKR
drain interval is 18000km/6 months whichever comes first
MOS2 Based 10W40(4 litre) = 3300 PKR
drain interval is 15000km/6 months whichever comes first
Up to now after engine oil change, i have driven nearly 100 km and some major difference are noticeable particularly in the brake-stop-go drive, previously it took ages for i-DSI to get the pick from 0-60km but now it is more rapid.
But, i will share my findings on regular basis