Originally Posted by
Bend alot
Chemistry of things like fuel have benefits and penalties in achieving a target such as a "octane rating"
They are not tabled as such as they are by products of a requirement of the fuel.
Changing any part of the chemistry can keep the same "octane rating" and other performance items like say burn speed.
But can have massive changes on other things due to chemistry change - say more acidic for example, that brings on corrosion in humid conditions on valve faces that accelerates wear.
A single atom can change things dramatically.
Lead seems to have effects on cooling and lubrication in certain applications as a by product.
Back on track back here - it is very hard to post as a "new here member" when not new member waffle a bit and need to be reminded that even if they "eye witness" they can be wrong and at times admit they are.
So I will say the safety in certain aircraft has been reduced. Hot maybe humid and a reduction in lead can be a factor for this - lead was not added for cooling or anti wear on exhaust valves but it seems to have an effect when reduced - why I don't know. How is aircraft safety regulated in Australia?
Not Shell!