Sir, may device ba na will accurately measure how much fuel your engine consumes at a particular time. (like yung sa Mythbusters when they tested on a pickup truck kung ano mas fuel economic, door down, up, or may mesh ung likod). Meron ba nun d2 sa pinas? Ano po ba tawag, saan makakabili, at mga magkano po kaya?

Kailangan ko po kasi for a science project. ty mga sirs!