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Choosing Oil Viscosity
Engine oil viscosity (thickness) has an effect on fuel economy. Lower viscosity
engine oils can provide· better fuel economy; however, higher temperature
weather cOl1ditions. require· higher viscosity .engine. oils· for satisfactory
lubrication.
It is recommended that you select an oil not only of the proper quality and
viscosity, but also. a fuel-saving product.· These oils can be found in Chevrolet
dealer serviGe departments, service stati()ns and other retail stores. They are
identified by words such as:
"Energy Conserving," "Energy Saving,"
"Conserves Gasoline,"
"Gas Saving,"
"Gasoline
Saving,"
"Friction
Reducing," "Improved Gasoline Mileage," "Improved Fuel Economy" or "Fuel
Saving."
The following chart lists the engine oil viscosities recommended for the
tE3lT1per~ture
range you·. expecLbefore your next oil change. For temperatures
above -18'C '(O'F), SAE 10W-30 is the preferred viscosity grade. If cold-
weather starting problems are encountered at temperatures below -18'C
(O'F), SAE 5W-30 viscosity oils m?-y be required.
Change Intervals
The oil and oil filter change intervals for your engine are based on the use of
SF-quality oils and high-quality filters such as AC oil filters. Using oils other
than SF-quality, or oil and/or filter change intervals longer than recommended,
could reduce engine life.
Damage to engines due to improper maintenance or use of incorrect oil quality
'andl0r"'vi$9()~ity}s .~ot
covered by the Chevrolet new car warranties.
Your engine
WEIS
filled with a high-quality engine oil when it was built. You do
not have to change this oil before the first recommended change interval.
•
Severe Service- Change the oil and oil filter every 3,000 miles (4 800
kilometers) or three months (whichevefcbmes first) if one or more of the
following "severe service" conditions is often encountered:
•
Driving in dusty areas.
•
Towing a trailer.
•
Frequent idling or idling for long periods.
•
Oriving 4 miles (6 kilometers) or less in freezing weather.
•
Change the oil and oil filter as soon as possible after driving in a dust
storm.
~
Norma! Service- If your engine is not a turbo-charged engine and your
normal driving does not include one of the above "severe service"
conditions, change the oil every 7,500 miles (12 000 kilometers) or 12
months, whichever comes first. Change the oil filter at the first oil change,
then every other oil change, if mileage (7,500 miles or 12 000 kilometers)
determines when you change the oil. If time (12 months) determines when
you change the oil, change the filter with every oil change.
•
If you have a turbocharged engine, it is VERY IMPORTANT to change the
oil and oil filter EVERY 3,000 miles (4 800 kilometers).
5-4
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