"vmx" <mitrigtigenavn@hotmail.com> skrev i en meddelelse
news:g2k5ko$coc$2@registered.motzarella.org...
> "Michael Dahlberg" <m.dahlberg@mail.tdcadsl.dk> wrote in message
> news:484d8ec5$0$56796$edfadb0f@dtext02.news.tele.dk...
>>
>> "Orla Pedersen" <o.pedersen.torsted[hos]post.tele.dk.invalid> skrev i
>> en meddelelse news:syt0oh60ut10.tc1s5nge0ef2.dlg@40tude.net...
>>> On Mon, 9 Jun 2008 21:33:51 +0200, vmx wrote:
>>>
>>>> Hvor finder jeg den slags olie ? (fabrikatet er uden betydning)
>>>
>>> Brugsen/Kvikly
>>>
>> Hej Orla.
>> Hvorfor fortæller vi ham ikke at han bare kan købe noget CASTROL
>> MAGNATEC 10W-40, og blæse på det der står om syntetisk teknologi på
>> bøtten! Det er jo alligevel gruppe III basisolie.
>>
>>
>> Michael D
>>
>
> Er det korrekt eller en "myte" ?
> ( har du et link til mere info ? )
>
In the late 1990s, Castrol started selling an oil made from Group III
base oil and called it SynTec Full Synthetic. Mobil sued Castrol,
asserting that this oil was not synthetic, but simply a highly refined
petroleum oil, and therefore it was false advertising to call it
synthetic. In 1999, Mobil lost their lawsuit. It was decided that the
word "synthetic" was a marketing term and referred to properties, not to
production methods or ingredients. Castrol continues to make SynTec out
of Group III base oils, that is highly purified mineral oil with most
all of the cockroach bits removed.
Hele teksten er her:
http://motorcycleinfo.calsci.com/Oils1.html
Heavy stuff
Eller her;
Here's what happened, according to a detailed account published in the
trade magazine Lubricants World. Late in 1997, Castrol changed the
formula of its Syntec "full synthetic motor oil", eliminating the
polyalphaolefins (PAO) base stock (that's the "synthetic" part, which
makes up about 70% by volume of what's in the bottle) and replacing it
with a "hydroisomerized" petroleum base stock.
Mobil Oil Corporation, maker of Mobil 1, "Worlds Leading Synthetic Motor
Oil," said no fair and took its complaint to the National Advertising
Division (NAD) of the Council of Better Business Bureaus. NAD often
arbitrates between feuding advertisers on their conflicting claims.
The notion behind synthetic motor oils as we've known them is an elegant
one. Instead of relying on the cocktail of hydrocarbons contained in
crude oil, why not go into the laboratory and build the perfect base
stock from scratch, molecule by molecule, and builds it till it gets
10-carbon molecules, then combines three of those to form PAO. The
result is a fluid more stable than the usual base oils derived from
crude. It keeps flowing at low temperatures. It's more resistant to
boiling off, and more resistant to oxidation, which causes thickening
with prolonged exposure to high temperatures.
Still, there's more than one road to the point B of improved stability.
Petroleum refiners in recent years have learned how to break apart
certain undesirable molecules - wax, for example, which causes
thickening of oil at low temperatures- and transform them by chemical
reaction into helpful molecules. These new hydroisomerized base oils,
in the view of some industry participants provided properties similar to
PAO's but only cost half as much," Lubricants World reported.
The argument before NAD tiptoed around the obvious- does the consumer
get four bucks' worth of value from each quart of synthetic oil?- and
plunged straight into deep semantics. Mobil's experts said "synthetic"
traditionally meant big molecules built up from small ones. Castrol's
side held out for a looser description, defining "synthetic" as "the
product of an intended chemical reaction."
What do unbiased sources say? It turns out that the Society of
Automotive Engineers (SAE) and the American Petroleum Institute (API)
both have technical standards covering motor oils, and both of these
organizations in the '90's backed away from their old definitions of
"synthetic," leaving lots of room for new interpretations.
In the end, NAD decided that the evidence constitutes a reasonable basis
for the claim that Castrol Syntec, as currently formulated, is a
synthetic motor oil, said Lubricants World.
The obvious question now: Has the term "synthetic motor oil" been
opened up to the point that it no longer means anything? Maybe. But
here's a better question: Did synthetic ever mean what we thought it
meant?
http://www.syntheticsbestoil.com/mobil.htm
Hygge med læsningen!
Michael D