Hi sir , I have Mira 2014 model 2017 registered , i was previously using Castrol 5w/30 OIL , My Car was giving 18/19 Km without A/C and 15/16 With A/C - And when my car runs 3000 kms My mechanic Changed the Oil , He used Pso 20w/50 Oil , Now My car is giving 9/10 Km on A/C and maximum 11.8 without A/C , My car is already crossed the 60000 Km , and Now it is 63040 km . please Let me know why my car suddenly gone from 19 to 11 . I have used the Gear filter of Vic . And Air filter of Leppon !
Also i want to know the Fuel tank capacity of the car also
Thanks