Join Date: Jul 2000
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Storing oil can lead to problems. There are two schools of thought about the eventual degradation of oil on storage: 1. in small tankage there seems to be a greater risk of biological growth which degrades the oil plus some measure of the oil decomposing itself .... all probably due to water vapor mixing with the fuel and if the oil was produced in a 'cracking' unit or a distilate source. 2. In VERY large tanks .... this doesnt seem to happen.
In my engineering mind (and from about 30 years of filtration engineering, etc.) a day tank shouldnt be a static storage device; rather, should really have a constant flow in & out so that the fuel there is always mixing (turning-over). Inother words a good day tank is probably best described as temporary storage device arranged so that the contents 'can' be used if the main delivery system fails.