Hello Sir,
Sir I have Honda City 2012 Prosmatec, I purchase it 2 months ago. The owner had used Total 10w40 (Mineral) and with that fuel Average was 18 on Long. Now I change it to Zic X7 10w40 but now it gives 13 on Long.
Should I switch back to Total 10w40 or should I use Total 5w30? Car Driven 170k, Engine in Good Condition.