GENERAL UPKEEP--Lubrication
ENGINE
Low viscosity oils are recommended for use in the engine sump. These
oils are each of the correct viscosity and character to afford complete
lubrication protection. Additives which dilute the oil or otherwise impair
this protection must NOT be used.
After many thousands of miles running the rate of oil consumption will
increase. When the rate becomes higher than 1 gallon per thousand miles
(1
litre per 400 km.), it will be desirable to use the next heavier grade of the
brand of oil you normally employ. If the engine is found to require very
little oil for replenishment, then it is desirable to drain the oil every 2,500
miles (4,000 km.) and refill with fresh oil.
We have found the use of an upper cylinder lubricant to be of advantage,
particularly in new engines, and recommend the use of such a lubricant,
particularly until the engine is thoroughly
"
run-in." Such lubricants may
be used with advantage throughout the life of the car, particularly during
wintry weather.
Running-in compounds containing Acheson's colloidal graphite are available.
They are prepared in a form suitable for addition to the oil in the engine sump.
These should only be used during the running-in period for new or re-
conditioned engines.
Carburettors
Every 5,000 miles (8,000 km.)
unscrew the two brass hexagon
plugs in the top of the
carbur-
ettor and top up with current
engine oil to the level of the
inner hollow shaft. Apply oil
A
Thc
-.
also to the throttle linkages on
the engine, do not oil the bear-
ings of the transverse rod at-
tached to the scuttle as this will
seriously deteriorate the sealing
composition.
:
Oil Cleaner
The oil cleaner has been de-
signed to filter the oil to a very
fine
degree and the only atten-
tion it requires is to see that the
filtering cartridge
(B)
is re-
moved and that a new replace-
ment cartridge is fitted at periods
not exceeding 10,000 miles
(16,000
km.).
It is essential
that this operation be carried
out at the specified periods to
Fig.
4.
Oil
Cleaner.
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