Mixing different colors of Avgas

[BD King]

Yellow. What does it mean when you tap the tanks and it is yellow?

 

[:-)]

Yellow. What does it mean when you tap the tanks and it is yellow?

You've got the wrong truck.

 

[hydroflyer]

I believe it was in the Jepp Private Pilot manual where I saw one sentence referring to the colors going clear when mixed together, it may have been under a picture. However, it was only with the red/green/blue avgas and I think it was when mixed evenly. If one fuel type was more dominant, then the overall color would have a slight tint in favor of that fuel. Example a 60% 100LL and 40% 80 octane avgas mix should have a very weak blue color. Never seen it done myself, but I have read it in published books. I have no idea what would happen if auto gas was added in to the mix.

 

[wt219200]

Old Thread Revival

I remember being told something about two grades being mixed together and turning "straw" colored. Straw, not yellow, I don't know why. Anybody else heard this?

 

[MFRskyknight]

I think I also heard it turns clear.

What I'm not sure about is what happens if you pour it over the rocks and add some vodka, gin, rum, cola, and garnish it with a lemon wedge. Anyone ever tried that? :nuts:

MFR

 

[mushroom]

Jet fuel is clear or straw-colored.

I mixed 80 and 100LL to see what would actually happen years ago when I was instructing and they turned clear. I don't think it is an urban legend. I think it is something the refiners put into the fuel (or are required to put in) for safety.

 

[stearnst]

I remember being told something about two grades being mixed together and turning "straw" colored. Straw, not yellow, I don't know why. Anybody else heard this?

The Pilot's Handbook of Aeronautical Knowledge says that Jet A is "Colorless or Straw", they make no mention of mixing grades though, other than don't mix "down" octanes.

 

[stearnst]

Oops, Mushroom beat me to it.