Evening star., 1939-06-18

engine. More important is the fact
that the filter serves as an oil cooler,
1t carries the oil away from the hot
metal OF the engine and runs it
through thin wall container which
is exposed to the air draft through
the radiator. All this helps to i'm
prove oil mileage"
Tip to the Tourist.
When the car is loaded down with
luggage be sure to watch out for its
increased tendency to sway on
curves. This is particularly i'm
portant with cars with short Wheel
base and long bodies which over
hang the rear axle. Loaded down in
this way the car will give a sensation
OF skldding when its rear wheels are
tracking properly. But it will be a
warning that real skid is much
more likely to develop.
Lesson From a Test.
Toying with very ingenious
device for testing the relative effec-
tiveness of various patterns in tire
treads chanced upon an idea which
1 think has not been given sufficient
publicity. The test consisted of q
short glass runway over which the
rubber test blocks were slid under
the impact of swinging weight.
Water was put on the glass to
simulate a rainy day stop, and
blocks carrying the best treads were
supposed to stop before reaching the
far end of the glass. 1 discovered
OF course, that on the average several
OF the blocks stopped much better
than the rest, but imagine my sur
prise when every now and again the
best tread block of all would go
Whizzing all the way to the end of
the runway. Just as if the tread
pattern had been CHANGED.
1t simply demonstrate. that you
can't be too sure Of tread design
alone. There is just enough varia-
ton in tread to surface grip. due to
the water. to make for some sur
priseS in results Here was my eX-
planation of recent stop in which
I found one tire locked into bad
slide The particular wheel hap
4 ptItCb W IllG q pol llOll vi lllC IodA
that was more slippery than the
rest.
This Weeks Motor Queries.
@. In order to adjust the toe-in
of the front wheels of my car I
followed instructions carefully by
loosening the clamp bolts of the
left te-rod and turning the latter.
But since doing the job there is a
very stiff action to the steering as
if something were binding I am
not going to use the car until I
hear from you.-K. NJ. S.
A. You have not followed direc-
tions quite carefully enough The
tie-rod ends should be in align
ment with their ball seats before the
locking bolts are clamped.
@ I have been having consider
able trouble with dirt getting into
the carburetor Jets, although the
fuel pump is equipped with the
usual strainer. Is there any way I
can avoid this annoyance?-L. B.
A. The easiest plan is to install
one of the special strainers which
are now available. Space between the
discs has been reduced to 002 inch.
which is sufficient to keep out lint
and fine sand.
Q. The engine of my car seems to
have more power yet knocks badly
when I accelerate or push it on a
hill. I am getting better mileage
than when it was new. but even the
best grades of fuel do not check the
knock. What do you think causes
this?-F. W. B.
A. Compression is higher because
the cylinders are filling up with car
bon. A carbon and valve job is the
answer here.
Mr.. Russell TiN dnS,Der ques-
tions regarding the safe care aud
operation OF your car. Just ad-
dress him care OF The Sunday
Star and enclose stamped, self
addressed envelope for personal
reply.