Fryer Oil storage

[cef2lion]

I have an option to get weekly drops of fryer oil from friend who runs a local bar. Oil would be in 5 gallon containers. Would have to look into the process of making fuel from the oil. If I started collecting it now how long can one store it before it is unuseable? It might be awhile before I can do anything with it and I do not want to have a stock pile of it that is of no use.

Craig

[mrutkaus]

no scientific basis but it seems it would last a year or so no problem

if longer there are probably some things such as ascorbic acid or other things which i forget which would preserve it longer

look on bottles of commercial cooking oil to see what additives they use for preservation

mike

[rdbigfarmboy]

Compared to diesel its organic.
Used cooking oil contains water microbes and food particles.
If you seperate and filter it then use a biocide you might have a shelf life of a few months.

It already contains everthing it needs to degrade, microbes, water, food.

[mrutkaus]

No microbes in 400 degree used cooking oil, unless you let them in afterwards!!!

Mike

[rdbigfarmboy]

Where does the rancid odor, and layer of water and food particles come from?
Compared to diesel its easily degraded by microbes.

[mrutkaus]

Rancidity is oxidation:

ahttp://www.soonsoonoil.com.my/FAQ.htm#Q8

I'm sure you're right that microbes affect fryer oil more than diesel I just meant that the oil heated to a high temp kills anything living. After it cools down unless it's kept sealed/clean, anything could get in

Mike