Swift Fuels UL94 Av Gas

[427yenko]

I have heard of the 100UL version as well, although that is not available around my neck of the woods. What other advantages are you speaking of that the UL versions have over 100LL?

[L16pilot]

Originally Posted by 427yenko

I have heard of the 100UL version as well, although that is not available around my neck of the woods. What other advantages are you speaking of that the UL versions have over 100LL?

TEL can leave deposits in the combustion chamber, especially on low compresion engines and in engines that idle or run at low rpm for extended periods and contaminates the oil. I've heard it said oil change intervals can be extended using unleaded fuel in aircraft engines.running unleaded fuel in aircraft engines can extend oil change intervals.

[L16pilot]

Oh, and to be clear....I love 100LL overall. The downsides are minor IMO and are far outweighed by the benefits of high octane, affordability, availability, consistency of tune and long shelf life.

[L16pilot]

Just a follow up on the UL94 discussion...just read this article today in the Oct 2024 issue of Piper Flyer magazine. Take into consideration trying to directly compare air-cooled aircraft engines to water-cooled automotive engines is in large part apples-to-oranges, but thought it interesting...