[aerohead]

Originally Posted by Logic

Firstly; I don't 'see it', but there seem to be a good number of indipendant tests proving this works. (in Diesel engines)

Some links to get you started:
https://www.carexpert.com.au/car-new...diesel-engines

https://dfcdiesel.com/2023/05/02/how...iesel-engines/

Home Page:
https://www.speedofair.com/

Youtube:
https://www.youtube.com/results?sear...impled+pistons

I have yet to research this properly but for the moment:
IF they work; How and Why??
aerohead??

This seems pretty easy to DIY.

I'm not current on Diesels, as I've lost interest in internal combustion, but the last time I looked, the most efficient diesels were in ocean-going cargo ships.
The one reported, was manufactured by HITACHI, of Japan, which ran on bunker fuel, was compound-turbocharged, and operated at a maximum, 130-rpm.
The pistons are as tall as an adult male.
The brake thermal efficiency is 42% ( 58% of the thermal energy is lost ).
The ships can stay at sea for 3-months per 'tank.'
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These engines would have already undergone intense investigation for combustion efficiency, and without exacting specificity, the claims of a 20% improvement in mpg would require third-party laboratories corroborating the same extraordinary evidence.
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My initial reaction to the claim is that it is highly dubious!