Is it just me or when i try
Shell: i step on the pedal, engine respond delays like 1 - 1.5sec ,engine revs louder, speedometer rises slowly when i'm trying to go 100 to 120 km/h
Esso/petron: stepped on the pedal, engine respond time to the pedal 0.5 - 1sec , engine revs but not that loud compare to shell, and speedometer increase faster.

True?