We are using Shell Helix HX5 10W40 in our 1.3L FAW V2, its good, giving no problem, and price is also very reasonable, 2200Rs/4Litre , 3000-4000 KM tak chalta hai. 15W-40 aur iss mein koi khaas farq nahi hai, 15W thora thick hota hai bas. Lekin subah cold Engine kay liye 10W ziada behter rehta hai bcz its thin.
HX7 thora mehnga hai HX5 se aur wo ziada behter hai HX5 se khaas taur per New Vehicles kay liye Shell walay HX7 aur Ultra recommend kertay hain. See second Image