Recommended Grade And Viscosity; Synthetic Oil; Cooling System - Subaru Forester 2013 Owner's Manual

& Recommended grade and
viscosity
CAUTION
Use only engine oil with the recom-
mended grade and viscosity.
Refer to "Engine oil" F12-4.
NOTE
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 en-
gine.
& Synthetic oil
You can use synthetic engine oil that
meets the same requirements given for
conventional engine oil. When using
synthetic oil, you must use oil of the same
classification, viscosity and grade shown
in this Owner's Manual. Refer to "Engine
oil" F12-4. Also, you must follow the oil
and filter changing intervals shown in the
maintenance schedule. Refer to "Mainte-
nance schedule" F11-3.
NOTE
Synthetic oil of the grade and viscosity
noted in chapter 12 is the recom-
mended engine oil for optimum engine
performance. Conventional oil may be
used with no detriment to engine dur-
ability or driveability.
Maintenance and service/Cooling system

Cooling system

WARNING
Never attempt to remove the radia-
tor cap until the engine has been
shut off and has cooled down
completely. Since the coolant is
under pressure, you may suffer
serious burns from a spray of boil-
ing hot coolant when the cap is
removed.
CAUTION
. The cooling system has been
filled at the factory with a high
quality, corrosion-inhibiting,
year-around coolant which pro-
vides protection against freezing
down to −368C (−338F). Make
sure to always use genuine
SUBARU Super Coolant or an
equivalent (non-amine type cool-
ant).
. If the coolant requires water dilu-
tion, be sure to use soft water (or
clear and drinkable water) and to
follow the required dilution ratio.
. Mixing with a different coolant
11-19
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