Subaru Legacy Outback 2006, Owner'S Manual

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11-22
Maintenance and service
2.0-liter models and 3.0-liter models
SAE viscosity No. and applicable tem-
perature
*: 5W-30 is recommended.
Engine oil viscosity (thickness) affects fuel
economy. Oils of lower viscosity provide
better fuel economy. However, in hot
weather, oil of higher viscosity is required
to properly lubricate the engine.
„
Recommended grade and
viscosity under severe driv-
ing conditions
If the vehicle is used in desert areas, in ar-
eas with very high temperatures, or used
for heavy-duty applications such as tow-
ing a trailer, use of oil with the following
grade and viscosities is recommended.
API classification SM or SL:
SAE viscosity No.:
30, 40, 10W-50, 20W-40, 20W-50
Cooling system
Use only engine oil with the recom-
mended grade and viscosity.
B00522
5W-30*
10W-30, 10W-40
-30 -20 -10 0 10 20 30 40
-20 0 60 20 80 100 40
Never attempt to remove the radia-
tor cap until the engine has been
shut off and has cooled down com-
pletely. Since the coolant is under
pressure, you may suffer serious
burns from a spray of boiling hot
coolant when the cap is removed.
y
The cooling system has been
filled at the factory with a high
quality, corrosion-inhibiting, year-
around coolant which provides
protection against freezing down
to –36
°
C (–33
°
F). For adding, we
recommend that you use genuine
SUBARU coolant or an equiva-
lent: a mixture of 50% soft water
and 50% ethylene-glycol basis
coolant. Use of improper coolants
may result in corrosion in the
cooling system. It is important to
maintain protection against freez-
ing and corrosion, even if freezing
temperatures are not expected.
Never mix different kinds of cool-
ant.