Austin SEVEN - Lubrication; Use only the Recommended Oils and Greases; Impurities; Choice of Lubricants

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LUBRICATION
Use only the Recommended Oils and
Greases
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HE correct lubrication of any piece' of machinery is of the utmost
importance, but for ,the modern high-speed automobile engine, which
operates at sustained high temperatures and speeds, it is absolutely
essential that only oils of the highest quality and correct grade be used.
Inferior oils, or unsuitable oils, will almost inevitably cause excessive
wear in an unduly short time. -
We cannot over emphasise the
folly of using so-called" cheap"
lubricants.
Modern cars use comparatively
little oil, so that the cost of using a
good lubricant is negligible compared
with the cost of using inferior oil.
Good lubricating oil ensures that you
always get out of your car the best
performance that it can give; it re-
duces carbon deposit,making frequent
decarbonising unnecessary; it makes
starting easier, thereby avoiding de-
terioration of the battery; it reduces
engine wear and eliminates avoidable
causes of mechanical breakdown with
possible heavy repair bills.
Colloidal Graphite.
Running-in Compound containing colloidal graphite, marketed by
oil companies, is valuable for use during the running-i~ period and is
added to the sump oil in the proportion of one pint to a gallon of any of
the engine oils recommended by the Austin Motor Co.
It is always important, however, to prevent as far as possible oildilution
by water such'as may be caused by condensation or leaking through the
cylinder head gasket.
Lubricants represent the smallest proportion of your expenditure on
the upkeep of a car, so that it is obviously false economy to use other than
the best. '
Impurities.
But even the best oil becomes
contaminated with certain impurities
during use. In the engine, these
may be unburnt fuel, carbon, metallic
particles, moisture, etc., and although
the oil itself does not deteriorate the
presence of these impurities must
reduce its efficiency as a lubricant and
in time cause avoidable wear. Oils of
the best quality resist contamination,
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Cleaning Ibe Oil Jet..
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and consequent wear, to the greatest extent. Nevertheless, it is imper-
ative that the crankcase be drained periodically to remove foreign matter,
and subsequently refilled with fresh clean oil.
Drain the crankcase immediately after a run. when the oil is warm,
and therefore fluid and thoroughly agitated. It will then carry away as
much of the contamination as possible. Never flush the crankcase with
paraffin-'50me will remain in the sump to contaminate the fresh oil, and,
in addition, it may loosen, but not entirely remove, certain deposits which
are best left undisturbed until the engine is overhauled. .
Rinse gauze filters in petrol and allow to drain before refitting. Do
Dot wipe with fluffy rags, .
Oil in the gearbox and back axle becomes contaminated with metallic
particles from the gear teeth and these will cause unnecessary wear of the
bearings unless removed. These units should also be drained periodically
and may be flushed with a thin oil. This should be allowed to drain
thorougbly, after which the unit should be filled to the correct level with
fresh oil.
Choice of Lubricants,
Some lubricants are lighter in colour and appear thinner than others.
However, the colour of an oil or its appearance at atmospheric temper-
atures give no indication as to its efficiency under operating condition.
and temperatures. Therefore, oil should never be judged by colour or
apparent consistency.
The various lubricants which we officially recommend, each of
them having the high grade standard of quality required by our Research
Department, and all of them having proved entirely satisfactory in extended
.ervice, are tabulated on pages 36 and 37. They all have adequate
distribution at garages and filling stations.
A-Tho oil Iou.
The Anstin "Seven" Engine.
B-oil pump, C-oil w.".
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