after few weeks of using RP in my car. I noticed an improvement in gas milage, about .5 km per liter. I never reached 9Km/L of city driving with my previous oil. I filled up 35 liters or gas and I consumed 329 kms = 9.4 Kms/L, this is the best that I can get since my motul htec. I never reached this far using my previous oil.

I will still monitor my gas consumption since I filled a full tank everytime I go to gas station.

I'm currently happy with RP.... I put RP sticker in my car too!