Inefficient combustion, as a product of low quality fuel, is the reason why the current engine is not efficient. It would cause two problems:
Burn rate is not optimal
Carbon build-up which could deteriorate your engine
Those problems results in unburned hydrocarbon deposits inside the engine, causing engine wear and increasing maintenance costs with time.
Efficiamax® Ten-35 is the ONLY fuel treatment in the world that reduces soot and smoke and other harmful emissions a guaranteed 40%, and in many cases much higher. Efficiamax® reduces the harmful emissions that damage the environment.