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post #11 of 12 Old 01-18-2007
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Originally Posted by capecodphyllis
What happens if I go cruising on a sailboat without any engine at all? I do it every summer.

To a person used to sailing without an engine, a step up to an engine with a 'day tank' would be a real luxury.
True...but an engine with a poorly thought out fuel delivery system is worse than no engine at all...since it isn't reliable, and generally likely to fail when you're depending on it most heavily.


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post #12 of 12 Old 01-18-2007
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Capecod .....
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.
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