RE: Discoloration of Fuel.
I really appreciate feed backs of y'all. I learned a lot. Well, I'm not going to get rid of this fuel and yes it's a great idea that I should ask any of my flying buddies if I can use their fuel for one flight and see the difference.
I stored the fuel inside home for a long time!!! I'd say since May 2010, then it was transferred to the garage, but never been exposed to the sun. I wrapped it with a trash bin bag and as soon I pulled it out, I saw it changed color it's very very light yellowish color. I still feel Nitro in it and plane flew pretty well, until the weather turned really cold. As Houston, Magnolia and surrounding cities max go 3 points below freezing, but that day it was not freezing.
Anyway, I'd keep y'all posted and Thanks a lot again. I'm all ears to getting more feed backs and experiences on that.
Mody
*Few pix of my Phoenix Model Strega 40, after completion.