110 after a couple months

[evaneyeball]

I'm sure this is a dumb question but I just drained my gas tank and whats left of the gas is no longer purple or smell right, it is all brown and when it sits for more than a minute ish what I'm assuming is the oil all separates to the bottom and smells like a rotting mouse or something dead. This was unleaded vp110 and dumonde tech 111 the exact same tank that I ran in August at the winchester meet I forgot who I got it from down at winchester but it was out of the barrel not a 5 galloner. I take it that its just old or mabey the cold its probably been getting down to freezing in the shop where it is and its not a big deal its the only 110 I've got right now and only like 2 cups of it so its not like 20 gallons ruined just wanna know what might have made this happen

[The norm]

They say that the only dumb question is the question unasked....
I am not familiar with unleaded vp110. All the race fuel I used is leaded. I am also not familiar with dumond tech pre-mix. If it is a castor oil then you will see the oil separate from the fuel after a time. How long of a time I do not know as I stay away from castor.
I do know that the sonoco leaded 110 is purple before I mix it with Klotz R50. Klotz R50 is a red color so when mixed with the sonoco it turns a dark red color and will eventually turn brown.  I tend to use all my mixed fuel and only store unmixed sonoco 110. I have on occasion had left over mixed fuel and not seen the Klotz R50 separate from the fuel.  So that again makes me think you are using castor  or a castor blend.
Loren

[evaneyeball]

Then it was leaded, i dont remember but its purple and the dumonde tech i use is also purple so the fact its gray is weird. It wouldent let me post pictures before

[croat1]

Loren….

[The norm]

Some of what you see could possibly be the lead settling out of the gas. I have seen that in some of my race fuel that sat in a plastic jug for just shy of a year. It was not mixed however.
Loren