The International Cessna 170 Association

Green is the proper color on our gauges. Red is bad! Hard to get green any respect, but let things turn red and see the sweat pop out on your forehead

170C wrote:Green is the proper color on our gauges. Red is bad! Hard to get green any respect, but let things turn red and see the sweat pop out on your forehead

Yep, I agreee... Green is Lower/Slower... and it’s why a RED-line is found, for example, at the TOP end of our Airspeed Indicators.

GAHorn wrote:

170C wrote:I have noticed on a couple of occasions that 100LL placed in a clear, plastic bottle and exposed to sunlight will lose its blue color. Becomes clear. Still smells the same and will still run my tug.

You realize, Pokey, that the higher octane 100/130 has even MORE lead in it to make it burn s l o w e r (not detonate)... and that’s why they color it GREEN.

And the 115/145 has to mix red and blue (purple) to get it to burn even slower...

cessna170bdriver wrote:

GAHorn wrote:

170C wrote:I have noticed on a couple of occasions that 100LL placed in a clear, plastic bottle and exposed to sunlight will lose its blue color. Becomes clear. Still smells the same and will still run my tug.

You realize, Pokey, that the higher octane 100/130 has even MORE lead in it to make it burn s l o w e r (not detonate)... and that’s why they color it GREEN.

And the 115/145 has to mix red and blue (purple) to get it to burn even slower...

Yeah... contaminating red is bad Ju-Ju.


Anyone got a PURPLE One-Seventy?

GAHorn wrote:
Yeah... contaminating red is bad Ju-Ju.


Anyone got a PURPLE One-Seventy?

Actually saw one @ KXBP last week. I was up on the ladder adding fuel when he taxied by. It was nearly dark and I didn’t have time to chase him down. As usual I can’t get the pic to load but I’ll email it to you George!

John Nielsen of Flight Resource has a purple 170.