Mxsmanic wrote:
Airbus writes:

When and how do we inhale significant amounts of these?

They are exhausted into the air by engines that use leaded fuel. We then
inhale the air and the lead it contains.

Along with a huge number of other toxic substances, all of which are at
too low a level to cause harm.

Why are these additives in the fuel in the first place?

To prevent detonation (knocking).

You get half credit on that one; knocking wasn't the only reason.

I would like you to explain to us what was the impetus for removing lead
from automotive fuels, and why it has remained in aviation fuel.

Lead was removed from automotive fuels because it is toxic. I presume that it
remains in aviation fuels because the difficulty of eliminating it entirely
and ensuring that the resulting fuels and engines would remain safe is thought
to be greater than the risk from lead in the fuel.

Totally wrong.

Lead was phased out because it ruined catalytic converters and replaced
with something even more toxic.


--
Jim Pennino

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