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So...wouldja buy a GM?
TOK:
There seems to be some confusion on octane. The way I understand it, it is just a measure of knock resistance
The number of cylinders an engine has is meaningless to the octane rating, but in the example cited here (an engine running hot) the 4 cylinder engine would actually need the higher octane to resist pre-ingition due to the high cylinder temperature.
Fordman:
Pinball, I would say that the gasoline coming fom the same pipeline is a 'running joke' among the people who work at the refinery. Just as the running joke was to 'not buy a car made on Monday or Friday'.
All the milk comes from the same cows. So you say the Vitamin D is no different than the 2% Lowfat? No, the 2% has had some of the 'cream' so to speak removed or some would say 'watered' down to make it 2% lowfat. It's all pasturized in the same tanks, but what it is processed into and what jug or carton is where the difference is.
The same is true for Pepsi or Coca Cola syrup. Same syrup, just when its mixed with either sugar, corn syrup or Equal (sacchrin) does it become regular or diet.
The base product is the same, it's just what you want for the end result.
Same tree, it's either notebook paper or toilet paper! Its how you use the pulp to make tissue paper or weave paper (notebook is weave).
:cheers:
Fordman
richms:
You have weird octanes in the states - here its all 91 and 95, or at other stations 91 and 98.. which is stupid since nothing since the era of carbs should have the low octane stuff in it and few cars benifit from 98, but those that do are normally higher boost cars so 95 is a risky business in them unless you can keep your foot off the floor and the revs down...
But we have seperate nozzles for the fuels - partly because they have to put a massive cover like handle on the diesel one to stop people putting that into their cars in a moment of inattentiveness... and it still happens all the time..
In anycase. there are many GM cars here... holden branded holdens and europeans. The only US made GM car was a caviller that are used imports from japan that are branded toyota from some deal done in the clinton era. And the general consensus on them is to avoid at all costs.. The holdens however, well they are great - the european ones like the vectra and astra less so...
protokatie:
Octane = C8H18. It isnt a very good measure, as you could have some very viable C7H16 (septane) in the fuel as well. Or even C10H24 (decatane SP?) .
Regardless, count the molecules of Cx+H(2x +2) for as long as they last. Sad to live at the end of modern civilization.
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