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WEDNESDAY. JANUARY 2S, 1961
Shell's research on propeller-icing
enables today's Super Shell to check cold-weather stalling
and give your car top performance
Shell's discovery of a new way to keep ice from
sticking to metal now lets your carburetor shrug
off frosty rime before it stalls your engine a prob
lem which can occur many degrees above freezing.
Read these little-known facts about this cause of
cold-weather stalling and how it is tackled by one
of nine ingredients in today's Super Shell gasoline.
UNDEn conditions which occur too often
for comfort, the carburetor in your car
may make ice faster than the refrigerator in
your kitchen.
Tiny particles of ice build up till they
block the carburetor throat. Then you stall.
'An annoying phenomenon which can affect
two out of three cars on the road.
This problem has bothered automotive
engineers and motorists for years. Particu
larly because it can happen even at forty
five degrees. Shell scientists, looking for a
way to prevent the dangerous icing-up of
' aiqilane propellers, found the answer.
They discovered a new way to discourage
ice from sticking to metal surfaces. Today,
this very same principle is applied in Shell's
carburetor anti-icer
Why can carburetors ice at 45 degrees?
The air your engine breathes contains mois
ture. Much of it condenses in the carburetor.
There the evaporation of the fuel may
quickly drop the temperature to well below
freezing and that means ice.
Arrow shows where Ice furms inside your
carburetor. Frost particles block the air-intolte
when the throttle plate is in idling position.
Result: your engine suffocates and dies.
Today, the anti-icing ingredient in Super
Shell simply coats the vital carburetor parts
to help keep ice-from sticking. And that's
the root of the problem.
I lore arc a few facts about the jobs done
by Super Shell's other ingredients. Read
about them to see how they help give your
car top performance.
Ingredient 2 is TCP for power,
mileage and longer plug-life
Super Shell now contains an even better
version of this famous additive, Its chemical
name is cresyl-diphcnyl-phosphatc.
TCP' additive can give your car tip to
15 per cent mote power; up to 17 extra
miles per ttwkful; and can make plugs
last up to twice as long.
New TCP docs this by neutralizing certain
harmful effects of combustion deposits. It is
scientifically formulated to keep them from
glowing when hot a major cause of power
loss. Also to keep them from diverting your
spark a major cause of "missing."
Ingredient 3 is "cat-cracked"
gasoline for power with a purr
This is petroleum that has actually cracked
under 900-degrce heat and catalytic action.
Its heavier molecules have been shattered
into livelier, lighter ones.
The result is a super-octane ingredient
Shell man checks furnace which pre heats
the petroleum before it is fed into cat-cracker.
Stand near by, and the roar sounds like I lades. .
that makes your engine purr with power the
moment you put your foot down.
note: "Cat-cracking" refers to the use of a
catalyst the mysterious substance that can
alter molecules without changing itself.
Ingredient 4 is Alkylate, noted
for knock control in hot engines
Jimmy Doolitlle helped pioneer this out
standing high-octane ingredient for Shell
aviation fuel.
Alkylate the ingredient that took the
dream of 100-octane gasoline out of the lab
and put it into the skies is now in Super
Shell. It controls knocking in hot engines
at high speeds Ixuter than anything else yet
available.
note: Speaking of controlling knocks at
high speeds, remember that car engines fre
quently turn cieii faster than the engines
of a DC-7. Think of this next lime you pass
another car.
Ingredient 5 is anti-knock mix
(or extra resistance to knocks
You might think that two high-octane ingre
dients are enough for knock-free perform-
o
MEDFORD MAIL TRIBUNE, MEDFORD, ORE.
EJM
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It's an ill wind that blows nobody any good. When Shell research scien
tists were tackling the problem of propeller-icing, they discovered that a
"surfactant" film, one ten-millionth of an inch thick, was enough to help
prevent ice sticking to metal. This same principle is the secret of the
ance. But Shell's scientists have cars like
musicians.
T7icy insist on adding a special anti
knock mix. A mix, so effective, one tea
spoon per gallon can boost anti-knock
rating by (we points.
This mix has the tricky job of regulating
combustion so that Super Shell gives each
piston a firm, even push rather than a
sharp blow which would cause a knock.
Ingredient 6 is Butane for
quick starts ou cold mornings
Butane is so eager to get going that Shell
keeps it under pressure 400 feet below
Here is the man-made cavern where Shell
stores Butane all summer, ready for the wintry
months ahead. It holds 22 million gallons.
ground to stop it from vaporizing by itself.
Think what this extra volatility means in
cold weather. Your engine fires in seconds.
There is less strain on your battery. And
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there is none on your patience.
note: Super Shell is primed with Butane
all year round. In winter, Shell scientists
simply increase the quick-start dose.
Ingredient 7 is Pentane mix
for fast warm-ups on cold days
Pcntancs arc made by tearing gasoline apart,
much as you split kindling to start a log fire.
In this case, the "logs" are petroleum's
heavier hydrocarbons. A special process
transforms their molecules from slow
burning "logs" into the quicker-firing
"kindling."
net result: Fast warm-up and lop per
formance in a burn'.
Ingredient 8 is gum preventive
to keep carburetors clean inside
Even the purest gasoline can form gum when
stored. This can clog carburetors and foul
automatic chokes. But, with Super Shell,
you needn't worry. A special gum preven
tive docs the trick.
It acts like a policeman controlling a mob.
Regulates unstable elements to help keep
them from clotting. 1 lence no gum problem.
Ingredient 9 is Platformate
for extra energy, more mileage
It takes eight million dollars' worth of plati
num catalyst for Shell to produce Platform
ate. But fortunately for you and for us, this
precious stiilf can be used over and over
atyin.
1 he platinum re-forming process.
v hich
Trademark for shalra urtlfl.ua taeollnf iddlllvt. C.aaollne eonlnlninir TCP li covered by V I Patent 3111111
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GO
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CORNELL CAP
anti-icing ingredient that goes into today's Super Shell. If you have been
bothered with mysterious stalls that often occur even on days when the
temperature is well above freezing, you should try a tankful of Super Shell.
Chances are your trouble was carburetor-icing.
gives Platformate its odd name, convert;,
petroleum into super-energy components
such as benzene, xylene and toluene.
Tlicse three alone release 11 per cent
more energy per gallon than the finest
100-oclane gasoline.
But make no mistake. This is not untamed
energy. Far from it, The super-energy of
Platformate is harnessed by the eight other
ingredients in Super Shell, where it behaves
so well you scarcely know it's there. That
is until you note your extra mileage. After
that, there is no doubt.
Test Super Shell for yourself
Try Super Shell next time you fill up. Y'ou'll
soon feel and hear a difference in the way
your engine runs.
That difference is lop performance.
A BULLETIN FROM SHELL RESEARCH
where 1,097 scientists are working
to mnke your car go better end better.
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