one thing that i pointed out to them is about calibrating the machine every five cars. when we tested it, the reading seemed to be too "dirty". when we calibrated it using oil that came from a sealed container, the reading became "cleaner"
Kala ko yun tester to check if the oil is shell or not. May indicator ng percentage ng shell oil and/or residue. Indicator: shell! - castrol inside shell container - mobil1 inside shell container - shell w/ kerosene/oil flushing - petron - caltex - deisel oil Hahha
ah hindi po ganun.