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There is persistent myth that "premium" high grade
gasoline somehow benefits your 93 ford taurus or other
cars designed to run on low and mid grade gas.
I suggest assigning a certain shape inlet on each car the
corresponds to the appropriate grade. That way you would
instantly know what
grade fit your car without having to do
RON/PON calculations etc.
Now most modern gas stations only have one nozzle that
administers different gas, but the button to select gas
could be in the shape of your inlet.
Futhermore diesel fuel should retain the standard round
nozzle that wouldn't fit (or just barely fit) inside the now
square triangle and star shaped holes. That way it would
prevent idiots from putting diesel in their gas engine.
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I don't really undersand this idea...You want to change the shape of the buttons? What if we could just put some sort of number like digits on there? So that when people pulled up they could know that their specific car corresponds to a particular hieroglyph, then simply select that number? And furthermore, what have you got against stupid people anyways? |
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Most cars will run on either grade. (except for diesels, which everyone knows.)
This would especially be troublesome on a dark, stormy night when your *high grade* auto was out of gas and the nozzle won't fit! |
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Since the main differences between these fuels is the amount of anti-knock agents added to the fuel, there is no harm to done a vehicle by putting in overly-high octane rated fuel. That said, the reverse is not true: if your car has a high compression ratio, it will be damaged by the use of fuel with an octane rating too low. |
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Therefore, it would seem sensible to have a slight variation on this: to alter the size of the fuel filler rather than the shape. The lower the car's necessary fuel grade, the larger the hole; this way economy cars can put in any fuel while perfomance cars can only put in the proper higher grades. |
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I'd certainly bun it this way since it would prevent people ruining their engines by using Asda's own brand reformed paint thinners because it's cheap and says 'petrol' on the label. (I don't actually know about Asda, it's just an example). I think a bun for the idea though [+]. |
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This is an idiot proofing scheme. A lot of folks do
think adding "premium" gasoline will increase
performance. There's anecodotal evidence that old
engines with carbon build up will have an
increased compression ratio + higher running temp
that will induce knock |
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It was to give someone an easy clue as to what
grade they use as a lot of vehicle only list it in the
booklet OR list a PON or RON number instead of
both. |
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They would still fit inside it would just be
awkward. This was really for the absent minded
people who put diesel in their car accidentally. |
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I get a real kick out of watching construction of gas stations. |
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They'll install 2 underground storage tanks - one diesel, one gasoline. |
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Then they sell diesel and 3 grades of gas... |
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