At present, reducing the negative impact of air in fuel is not seen as a priority among vehicle manufacturers. The reason for this is the way in which engines are tested.
In a laboratory setting, temperatures are kept stable, agitation and movement are minimal, fuel is generally gravity fed into test engines from huge tanks mounted above ground and variations in fuel pressure are minimal. This reduces the amount of air in the fuel and the recognition of the issues it can cause in an engine in a real-life environment.
For example, in reality, most engines have to draw fuel from the tank “uphill”, in trucks this can be 8-12 feet. Air/vapors are an inherent problem for all engines, including all cars, trucks, marine engines, generators, etc.
As well as not being shown up as an issue in the laboratory, since the amount of air and vapor entrained is changing constantly (it is a very elastic event), engine control units cannot be adjusted to compensate. Fuel cavitation (“vapor-lock”) is one of the most well documented and least understood phenomena today and has only been researched seriously since the late 1990s.
Air in fuel is an acknowledged issue of engines in real life, impacting negatively on performance and longevity.
Without a solution provided by engine manufacturers, AMJ Chemical created the highly effective product Oxytane®, known as Oxcetane in EU.