HomeMy WebLinkAboutThe Citizen, 1996-04-24, Page 13ALL USED CARS ARE NOT
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THE CITIZEN, WEDNESDAY, APRIL 24, 1996 PAGE 13.
Regular oil changes key to longer engine life
Why should I change the oil in
my car? It's all too easy to forget
that your car's engine generates
temperatures in excess of 200°C
under normal operating conditions.
If it's a turbo, that's more like
300°C!
Oil prevents metal to metal
contact and cleans out dirt and
combustion by-products. Many
people don't realize that oil is also
an important part of the cooling
system, dispersing about 20 per
cent of engine heat.
Today's cars are designed with
smaller, more fuel efficient
engines, and are built to tighter
tolerances. The engine oils you put
in have to be of an equally high
standard, and the manufacturers are
continually researching new and
improved products.
But nothing lasts forever. Over
time, the oil will lose some of its
viscosity (ability to flow) and will
pick up enough dirt and water in
suspension that it needs to be
replaced. Engine manufacturers
generally recommend an oil change
every 5,000 to 6,000 km. If you do
nothing else in the way of
preventive maintenance, do these
oil changes. They are the single
most effective thing you can do for
long engine life. And at about $20
per oil change is also one of the
cheapest.
So you've decided to have your
oil changed (or maybe you want to
change your own oil). Are all oils
the same? Should you just put any
kind of oil in your car? The short
answer is no — not all oils are equal.
All oils conform to high
standards. The biggest difference is
in the additives that each company
adds. These additives will enhance
the oil's cleaning effects in the
engine, will lay down a protective
When those little dashboard
warning lights come on, do you
know whether it's okay to proceed
to a service station or whether to
pull over immediately?
If the ALTERNATOR light
illuminates, it means the battery
may not be recharging so you can
keep driving to a service centre, but
you must not turn off the engine
until you get there because there
won't be enough power to start up
again.
OIL PRESSURE light means
pull over right away and turn off
layer on the metal walls to reduce
internal friction, and help the oil to
resist thermal and viscosity
breakdown.
There are also other additives or
oil treatments you can buy
separately. Such additives can help
any oil remove engine deposits,
protect engine parts, and improve
fuel consumption. They are
available at automotive stores or
wherever you get your oil changed
The Car Care council answers
some common questions about
motor oil:
Q. My owner's manual says I
need an API (American Petroleum
Institute) service rating SF engine
oil. All I can find is SG. Is that
okay?
A. Yes. The API service ratings
proceed in alphabetical order, so
SG is a higher standard than SF.
Owner's manuals typically say "use
SF or higher oils", for example.
However, you shouldn't put an SF
oil into an engine that requires SG
— that could void your warranty and
shorten your engine life.
Q. What's a multigrade?
A. The grade of an engine oil
describes its viscosity (ability to
flow). At lower temperatures, oil
thickens and doesn't flow as easily
— like molasses in January. The
lower the number, the more easily
it will flow at low temperatures.
Multigrades are oils that contain
additives called viscosity index
improvers, and so they offer a
range of viscosities (e.g. 5W30).
The lower the number in front of
the "W", the greater the oil's ability
to flow at low temperature. The
number after the "W" indicates the
oil's viscosity rating at normal
engine operating temperatures. The
"W" in the grade stands for winter.
Q. Do I need a different oil in
your engine. No oil pressure means
no lubrication, and that will
permanently damage your engine if
you keep driving.
. The BRAKE light might indicate
your parking brake is set or maybe
your main brakes need fluid or
service. You can keep driving
carefully to the service centre.
CHECK ENGINE could mean
any one of several things, but often
the problem self-adjusts and the
light flicks off again. You can
continue driving, but if it flicks on
and off frequently, or comes on and
stays on, see your mechanic.
summer?
A. Your owner's manual will tell
you what grade of oil your car
needs. Most newer cars use a 5W30
oil year round. Older cars may need
a bit more viscosity to keep the
protective film on the cylinder
walls. You'll probably need to use a
10W30 in the summer, switching to
a 5W30 in winter for better starting
and cold performance.
Q. Should I change the oil filter
every time 1 change the oil?
A. Most owner's manuals call for
a filter change every second oil
change. However, the filter collects
all the sludge and dirt from the
engine, and your clean oil will be
running through a dirty filter after
every second oil change. Canadians
average 2.8 oil changes per year.
The difference between changing
the filter every time and every
second time is not much more than
$5 a year. Considering the impor-
tance of c:ean oil to your engine,
it's awfully cheap insurance to
change the filter every time.
Q. Can I mix different brands of
engine
A. Yes, if you must. Because all
oils are manufactured to API and
SAE standards, you can mix
different brands. Because every
company has its own additives
aimed at enhancing the oil's
performance in your engine, you
should not make a habit of mixing
them — you'll get the best
performance by using the same oil.
At a pinch, it's better to add a litre
of 5W30 to an engine running on
10W30 than to run with low oil,
but it's not a good idea to mix
grades.
Q. How often should I check my
oil?
A. Get to know your car. Some
engines burn more oil than others,
and you may have to add a litre of
oil once or twice between oil
changes. Others don't burn much
oil. Check it regularly, whenever
you get gas or at least once a week.
If you've been driving, give the oil
a few minutes to settle back into
the sump. Then pull the dipstick
out, wipe it off, put it back in all
the way, and pull it out again. Read
the level of the oil — it should be
between the lines marked "full" and
"add", or "max" and "min",
depending on your car.
protectant
protects and beautifies
vinyl, rubber & plastic
500 ml ottosoo
multi-purpose
germicidal cleaner
700 ml pt# K1
Warning light alert
Blue Diamond - one step glaze
425 ml pt# 298
Autosol - metal polish
100 g pt# 1000
Rain X - glass treatment
See better, drive safer
200 ml pt# RX713
Wash 'n Wax one step, shampoo
and waxing system
455 ml pt# 851
Armorall
Spray Nine
Specials in effect until
May 5, 1996