Thanks Sir.. Actually Shell's 5W40 viscosity at 100 is almost 16 (I think mm2/sec), whereas Honda's 5W30's viscosity at 100 is 9.5-10... I think that is why I am experiencing more fuel consumption (a drop of 1.5 km/lit) and sluggish car.... Actually previously I searched for Total Quartz 9000 5W30, but their pump guys said "bhai jaan ye Pakistan ana band ho gya he 1.5 month pehle".. Then I went for Shell's 5w30 fully synthetic, F-6 pump guys said '' bhai jaan ye discontinue ho gya he''.... so at that time thought of trying 5W40.. Well, thank you ... What is the drain interval of Honda's 5W30 fully synthetic?
EDIT: enough with the search, going for Honda's 5W30 finally... But what is its drain interval? I read somewhere that it is good for 10,000 km.