supply of engine oil api 15 w 40 ci 4 plus , engine oil api 15 w 40 ci 4 plus specification : a) valvoline premium blue 7800 plus , make - valvoline or b) servo pride supereme plus, make- indian oil corporation ltd or c) milcy no. 1 plus ,make hindustan petrolum corporation ltd or crb turbomax 15w 4 0 , api ci4 plus , make -castrol as per drg.no. na as per specn. a)valvoline premium blue 7800 plu s , make- valvoline, or b) servo pride supereme plus,make: ioc ltd.,or c) milcy no. 1 plus ,make : hpc ltd.,or d) crb turbomax 15w 40,api ci4 plus,make-castrol. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]