The news scimitar. (Memphis, Tenn.) 1907-1926, 1920-04-03

Remember that perfect Iuhrtcauon Is
sthe most important factor in securing
long service from an engine. Don
run an engine fast OF hard, when 1t is
e. cold that the oil has thickehed' L0
not allow oyerheating from lack on
circulating water 10 occur as me p!S-
tons may scratch the cylinder through
the very much thlnned oil and DO hoi
fill the cooling system with water untl!
1.-THE cylinder block has cooled. ANolu
* freezing OF the cooling water. as II
usually causes cracking OF the Gym
der walls or Jackets. al,
Never allow an engine to run lule
at a speed high enough to make u
noisy or vihrate notceably, Bear IN
mind that, when racing, all the power
developed is expended In wearing the
engine out, DO not let an engine run
unreasonably fast on low gear, on n
level road. as this amounts practlcally
speaking TO racing 1t idle. the load upon
IL being very light, Refrain from run
ming long distances with an engine thal
Is missing explosions, especially u me
going is hard" for the powerful, I'M
equally spaced impulses, pound out the
bearings and stress the moving parts
abnormally,
For somewhat similar reason, no
engine, any Of the moving parts OF
which are loose should be operated be-
cause instead of the reasonable press
ures that normally act between the
working parts. there are destructive
blows which cause rapid wear OF pear
ings and stresses which may lead 10
the breaking away of parts from their
fastenings and the wrecktng OF the
whole engine Fortunately the loose
ness of parts makes itself known by
pounding noises and it is imperatively
necessary that such noises be needed
and the required readjustments prompt
~ made.
naNRone who habltually drives an en-
49, top speed need expect to obtain
MAXIMUM length OF service from II. Not
improbably, four times the mileage can
he secured from an engine that Is rare
+ liz run at above half speed as from the
same engine operated continuously at
top speed. One important reason why
an airplane engine Is 80 short lived
Is that II Is nearly always worked az
maximum speed OF course, automobile
engines are built to be driven hard,
but the owner ought to realize what
the result will be.
Operating an engine for long periods,
with wide open throttle. and excessive
1y slowed down, for instance in severe
hill climbing, Is usage which shortens
it's service period and, before II has
slowed down very low with gas fully
on. and certainly before II begins to
Tabor" lower gear should be en-
gagged. In a general way demanding
the utmost OF speed or pulling power
from an engine reduces the total serv-
ice II can render Running with the
spark too far advanced, especially with
open throttle, should be carefully avoid
ed, as II causes excessive bearing wear
and operating an engine, after 1t has
become SO heavily carbonized that II
self-ignites its charges. producing the
effects OF over advanced ignition, Is
detrimental for the same reason.
stepping on the throttle" when q
car is running slowly on high gear, in
order 10 accelerate rapidly, is not In
the interest of engine durability, es-
pecially II spark position is not care
fully regulated. II is much easier upon
the engine to open the throttle grad
uRlly and still better to engage low
er gear and accelerate on this, II the
car has been greatly slowed down. Many
engines shake badly above certain
speed or have certain speeds at which
they vibrate worse than at others and
their operation at such speeds. is to be
avoided II long. uninterrupted service
is the end sought
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