458
Cooling system
used oils are properly disposed of .
. If performing oil replacement yourself , observe the local regulations and dispose of waste oil properly .
& Recommended grade and viscosity
S11AE03
CAUTION
Use only engine oil with the recommended grade and viscosity .
Refer to “ Engine oil ” FP495 .
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 engine .
& Synthetic oil
S11AE05
You should 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 ” FP495 . Also , you must follow the oil and filter changing intervals shown in the “ Warranty and Maintenance Booklet ”.
NOTE
Synthetic oil of the grade and viscosity noted in chapter 12 is the recommended engine oil for optimum engine performance . Conventional oil may be used if synthetic oil is unavailable .
11-7 . Cooling system & Safety precautions
WARNING
S11AF
S11AF04
Never remove the radiator 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 boiling hot coolant when the cap is removed .
CAUTION
. Vehicles are filled at the factory with SUBARU SUPER COOLANT that does not require the first change for 11 years / 137,500 miles ( 11 years / 220,000 km ). This coolant should not be mixed with any other brand or type of coolant during this period . Mixing with a different coolant will reduce the life of the coolant . When necessary to add the coolant for any reason , use only SUBARU SUPER COOLANT .
If the SUBARU SUPER COOLANT is diluted with another brand or