It is typically illegal to pump AVG directly into a car but not illegal to purchase it in gas cans and use it for whatever you need it for.

While reading that article, I caught this and it kinda cracks me up.

"Second, EPA issued regulations designed to gradually reduce the content of lead in leaded gasoline, because EPA found that lead particle emissions from motor vehicles presented a significant risk of harm to the health of urban populations, especially children."

Many of us grew up in the Leaded fuel era and are reasonably normal. I teach in a local college and I can tell you first hand that this current generation is full of idiots. No Lead gas has done nothing to help the younger generations. LOL

Not legal for highway use, period.

https://www.govinfo.gov/content/pkg/FR-1996-02-02/pdf/96-2231.pdf

When I was a practicing A&P in the late 80's/early 90's I was running a 10.0:1 (via milled 302 heads) 318 with headers, AFB, dual plane Wieand, 284/.484 purpleshaft. I'd run 25% 100LL with 85 unleaded (4 gallons of 100LL in a 16 gal tank). Engine really liked that with 37* (6kft) and I could bring it all in by 2500 without problems. I'd have to back off to 34 for 91 unleaded, and couldn't stand on it off the line to avoid detonation. Sure smelled good. I could fill it up with that combination for $15.

I have no performance metrics to share.

So, when I was working in a repair station on Continental and Lycoming airplane engines that ran 10LL exclusively, at 2500hr overhaul we'd knock the plug out of the crank snout and from behind the plug back to where the cranks got solid right before No.1 brg, would be packed with lead. Leather aprons, rubber gloves up to our elbows and face shields were worn while we used aluminum scrapers to literally get the lead out and it all had to go into a hazmat bin.

Lead in the blow-by mixes with the oil and through some act of physics and engineering would accumulate in that part of the crank. I was always told that there is too much lead in 100LL to run it uncut in an automotive application, and that its exclusive use (uncut) on the street would cause long term durability problems due to oil formulations and no place for the stray lead to collect, which would cause it to pack piston ring grooves as well as mucking up the PCV system.

Only then did I talk it over with my A&P mechanic who told me to stop immediately. He explained even "LL" aviation fuel has FAR higher lead content than automotive gas ever had.

"TEL remains an ingredient of 100 octane avgas for piston-engine aircraft. The current formulation of 100LL (low lead, blue) aviation gasoline contains 2.12 grams of TEL per gallon, half the amount of the previous 100/130 (green) octane avgas (at 4.24 grams per gallon), but only slightly less than the 2.2 grams per gallon historically permitted in automotive leaded gasoline and substantially greater than the allowed 0.001 grams per gallon in automotive unleaded gasoline sold in the United States today."

Also, I'm quite sure, the amount of TEL in 100LL had dropped over the years. lication.

Are there any issues with running airplane gas in cars? There is a small airport by me that sells 100 octane airplane fuel that is ethanol free. This is the only ethanol free gas that I can find locally . Would this cause any issues with the motor, carburetors or fuel pump?

Don't get caught evading tax! You do not want to come to the attention of the taxman...EVER! For any reason. They don't sleep and they don't forget, and very, very rarely do they forgive.