Guys, tanong lang po.

I've been using only Caltex for about 6 months now and have been happy with the power that I get. My fuel consumption for my strada based on the LCD monitor has been a consistent 10.5km/L mixed city and hwy. Then, a few weeks ago, I decided to try Petron. After a while, I noticed that the FC, again based on the LCD monitor, became 11-11.4 km/L. I monitored it for a few more days, same driver and same driving style, and it has become consistently like that. So now, I've switched to Petron.

Ganyan din ba observation niyo?