I can answer that Scott... It's 100LL Av Gas (94 RON) and diesel is just that, Diesel.
We add 100LL as stabilizer to any gasoline type at 20% of volume. Airplane can sit for 10 years and fuel is still good.
Some smaller piston aircraft are STC'd for 87 Octane. These will last 8-10 years if mixed with 25% 100LL.
100LL is more highly refined, has considerably less lubricity and is anti-microbial in nature-it stabilizes itself.
Any non Av grade gas begins to break down on day 2 with exposure to the elements, mainly O2. Moisture plays a part as well, microbials live in car gas and Kerosene, over time it grows algal organisms and sours quickly. I'm getting too deep here :-))

Last edited by Snipe; 03/04/24 10:32 AM.

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