[bill1952]

>Lead? What for.

Do you always answer your own questions and then act as if you just didn’t?

>It is an OWT that it helps cool or lube the exhaust valves

The auto industry had this problem back in the 70s when it had to re engineer those same valves and seats.
Still does.

Some aircraft engines are allowed the FAA approved Mogas conversion with the proper STC.
Almost all of them are not so allowed.
What will we do with them?

[stubernx98]

My 310 requires 100LL, and I sure hope this SwiftFuel thing is true. Lead is bad but necessary for the octane rating.

I wonder how this new fuel would affect fuel lines, O rings and the like.

[Dead Dog]

I don’t think there is a one to one comparison of the typical aircraft engine valve guide and auto use. IIRC, the ones originally designed for 80/85 octane had hardened guides to begin with. The TEL was only added for a slight octane rating increase.

The lubricity of Swiftfuel, from the interview anyway, is more on par with diesel and Jet A than 100LL. Notice Diesels don’t need lead for lubricity.