I know that the earlier model and many foreign cars (until recently) were not prepared to accept a different fuel form.

These cars run rough, have numerous mechanical issues.

But, now with this added information, has anyone investigated what the potential damage to any automobile would be? Does this “fuel” flush through the system fast enough to prevent damage? How about a car that gets little usage?

IDK, it would seem to me the metals are very thin and I would believer that there are stagnant areas along the fuel route.