5 ms·

There is also an exception for leaded gas in small/private jets ("AVGas") so its used in some of those formulations.

sokoloff 3y ago
> exception for leaded gas in small/private jets Jets run on jet fuel (which is basically kerosene and has no lead). Avgas is used in many piston-powered small aircraft.
slapshot 3y ago
No jets use or have ever used leaded products. Jets run on Jet-A, which is a close relative of kerosene. It has never been leaded. The purpose of lead was to prevent cylinders from prematurely detonating ("knocking") in internal combustion engines. Jets do not have any cylinders to knock; the fuel burns continually in an open combustion chamber. You may have been thinking of 100LL (100 Low Lead) fuel for piston engined planes. Many airports stopped selling 100LL in January of 2022. The FAA has approved a lead-free replacement in fuels like UL94 that are steadily replacing 100LL.
- sokoloff 3y ago
  > Many airports stopped selling 100LL in January of 2022. Really? That is news to me. Googling reveals that two airports did that, both in the same county: Reid-Hillview Airport (KRHV) and San Martin Airport (E16).
  - slapshot 3y ago
    Bay Area bias, sorry. Many airports near me did. I have no knowledge about Oklahoma.
    - sokoloff 3y ago
      > Many airports near me did. Could you list a few of the many? I looked around Bay Area airports, and found most of them selling 100LL: KSFO - San Francisco International Airport - $9.90 KHAF - Half Moon Bay Airport - $6.42 KOAK - Metro Oakland International Airport - $8.21/$8.64 KHWD - Hayward Executive Airport - $7.99/$7.55 KPAO - Palo Alto Airport - $6.35/$6.95/$6.59 CA35 - San Rafael Airport - $6.84 KSJC - Norman Y Mineta San Jose International Airport - $10.07/$8.95 KLVK - Livermore Municipal Airport - $6.54/$7.54 KCCR - Buchanan Field Airport - $7.15/$6.98 KDVO - Gnoss Field Airport - $7.67/$7.87 KAPC - Napa County Airport - $9.20 0Q3 - Sonoma Valley Airport - $8.00 C83 - Byron Airport - $6.35 0Q9 - Sonoma Skypark Airport - $6.30 O69 - Petaluma Municipal Airport - $6.95
- GuB-42 3y ago
  At last! I live in France and it is still 100LL everywhere, except for ultralights which mostly use automotive gas (mogas) or sometimes UL91. But do they actually sell it everywhere? My experience with aviation is that change happens incredibly slowly. The simple fact that they still use that abomination that is 100LL is telling. Poisoning thousands of people for decades just because of paperwork essentially. As an amateur pilot, I understand the idea of using only tried and tested solutions, you really want things to be reliable up there, but our representatives can at least make the necessary efforts to make our already environmentally questionable hobby not needlessly poison people.
- fransje26 3y ago
  > Many airports stopped selling 100LL in January of 2022. Judging by the size of the GA fleet, and by the fact that a sizeable portion of that fleet is not certified to fly with UL94, allow me to doubt the seriousness of that news..
jstarfish 3y ago
That can't be the only exception. Maybe nobody sells it premixed anymore but back in the 90s we had to mix lead additive into gasoline for vintage motorcycles.
- rgmerk 3y ago
  Modern octane boosters for classic cars and bikes use other types of cylinder head lubricants.
placesalt 3y ago
It took ages, but that is finally being phased out > On February 23, 2022, the FAA joined aviation and petroleum industry stakeholders to announce a comprehensive public-private partnership to transition to lead-free aviation fuels for piston-engine aircraft by the end of 2030. https://www.faa.gov/about/initiatives/avgas https://www.faa.gov/about/initiatives/avgas

> exception for leaded gas in small/private jets Jets run on jet fuel (which is basically kerosene and has no lead). Avgas is used in many piston-powered small aircraft.

slapshot 3y ago

No jets use or have ever used leaded products. Jets run on Jet-A, which is a close relative of kerosene. It has never been leaded. The purpose of lead was to prevent cylinders from prematurely detonating ("knocking") in internal combustion engines. Jets do not have any cylinders to knock; the fuel burns continually in an open combustion chamber. You may have been thinking of 100LL (100 Low Lead) fuel for piston engined planes. Many airports stopped selling 100LL in January of 2022. The FAA has approved a lead-free replacement in fuels like UL94 that are steadily replacing 100LL.

sokoloff 3y ago
> Many airports stopped selling 100LL in January of 2022. Really? That is news to me. Googling reveals that two airports did that, both in the same county: Reid-Hillview Airport (KRHV) and San Martin Airport (E16).
- slapshot 3y ago
  Bay Area bias, sorry. Many airports near me did. I have no knowledge about Oklahoma.
  - sokoloff 3y ago
    > Many airports near me did. Could you list a few of the many? I looked around Bay Area airports, and found most of them selling 100LL: KSFO - San Francisco International Airport - $9.90 KHAF - Half Moon Bay Airport - $6.42 KOAK - Metro Oakland International Airport - $8.21/$8.64 KHWD - Hayward Executive Airport - $7.99/$7.55 KPAO - Palo Alto Airport - $6.35/$6.95/$6.59 CA35 - San Rafael Airport - $6.84 KSJC - Norman Y Mineta San Jose International Airport - $10.07/$8.95 KLVK - Livermore Municipal Airport - $6.54/$7.54 KCCR - Buchanan Field Airport - $7.15/$6.98 KDVO - Gnoss Field Airport - $7.67/$7.87 KAPC - Napa County Airport - $9.20 0Q3 - Sonoma Valley Airport - $8.00 C83 - Byron Airport - $6.35 0Q9 - Sonoma Skypark Airport - $6.30 O69 - Petaluma Municipal Airport - $6.95
GuB-42 3y ago
At last! I live in France and it is still 100LL everywhere, except for ultralights which mostly use automotive gas (mogas) or sometimes UL91. But do they actually sell it everywhere? My experience with aviation is that change happens incredibly slowly. The simple fact that they still use that abomination that is 100LL is telling. Poisoning thousands of people for decades just because of paperwork essentially. As an amateur pilot, I understand the idea of using only tried and tested solutions, you really want things to be reliable up there, but our representatives can at least make the necessary efforts to make our already environmentally questionable hobby not needlessly poison people.
fransje26 3y ago
> Many airports stopped selling 100LL in January of 2022. Judging by the size of the GA fleet, and by the fact that a sizeable portion of that fleet is not certified to fly with UL94, allow me to doubt the seriousness of that news..

jstarfish 3y ago

That can't be the only exception. Maybe nobody sells it premixed anymore but back in the 90s we had to mix lead additive into gasoline for vintage motorcycles.

rgmerk 3y ago
Modern octane boosters for classic cars and bikes use other types of cylinder head lubricants.

placesalt 3y ago

It took ages, but that is finally being phased out > On February 23, 2022, the FAA joined aviation and petroleum industry stakeholders to announce a comprehensive public-private partnership to transition to lead-free aviation fuels for piston-engine aircraft by the end of 2030. https://www.faa.gov/about/initiatives/avgas https://www.faa.gov/about/initiatives/avgas