DRIVING
THE
CAR-The
Engine
for a minute to let the oil circulate, but it should not be allowed to idle for
long periods, neither should the engine be raced up to high speeds.
An engine speed of approx. 1,500
r.p.m. may be regarded as a desirable
warming up speed.
DRIVING
Gear Changing
For a smooth gear change into a synchronised gear the movement should
be slow and deliberate. The gear lever must always be moved right home
to secure full engagement. Do not attempt to engage reverse gear whilst
the car is travelling forward.
Desirable Speed Limits (Particularly in gears lower than top)
The engine is capable of
"
revving
"
very fast, yet the driver should avoid
continued
"
over-revving," which is most likely to occur in the lower gears.
We strongly recommend that in all gears the driver shall not
drive the car continuously at engine speeds above 4,500
r.p.m.
However, during acceleration in the gears, it is permissible to
attain
5,000 r.p.m. for short periods.
NEW ENGINES
When the car is new, the engine may seem to be somewhat lacking in power,
due to the working surfaces not having become fully bedded down. This
will continue for the first 200 or 300 miles (320-480 km.), during which time
the engine will become gradually
"
run-in
"
(with proper use). The power
will be improving as the car is used for the first 1,000 miles (1,600 km.), and
this will be accompanied by a corresponding improvement in petrol con-
sumption. The engine sump should be drained and refilled with new oil at
the completion of the first 1,000 miles (see page 12).
At approximately 5,000 miles much benefit is gained by having the valves
ground in as described on page 24. Although this involves some slight in-
convenience in giving attention to a new engine, the trouble is well repaid by
the results obtained.
We recommend that the engine should be driven at speeds not exceeding 3,500
engine
r.p.m. for the first 500 miles (600 km.), and also suggest that "running-
in" should be progressive and that no harm is done if the engine is allowed to
"
rev
"
fairly fast so long as it is thoroughly warm, providing it is not
pulling
hard.
Also do not let the engine pull hard at low speeds, always select a lower
gear.
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