Subaru WRX & WRX STI Manuals 2016 WRX & WRX STI Owner’s Manual | Page 546

Specifications/Specifications

12-5

! Alternative engine oil
If the SUBARU approved oil is unavailable, the following alternative oil can be used.

NOTE
. Each quantity indicated here is only a guideline. The necessary quantity for replacement may differ slightly depending on
the temperature and other factors.
. In choosing an oil, you want the proper quality and viscosity, as well as one that will enhance 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. The following table lists the recommended viscosities and applicable temperatures.
. When adding oil, different brands may be used together as long as they are the same API classification and SAE viscosity
as those recommended by SUBARU.

Oil grade

SAE viscosity No. and
applicable temperature
5W-30 synthetic oil is the required oil
for optimum engine performance and
protection. Conventional oil may be
used if synthetic oil is unavailable.

STI:
· Adding the oil from L to F level:
1.1 US qt (1.0 liter, 0.9 Imp qt)
· Changing the oil and oil filter:
4.5 US qt (4.3 liters, 3.8 Imp qt)

*: If 5W-30 synthetic oil is not available, · Changing the oil:
5W-40 conventional oil may be used if
4.2 US qt (4.0 liters, 3.5 Imp qt)
replenishment is needed but should be
changed to 5W-30 synthetic oil at the
Except STI:
next oil change.
· Adding the oil from L to F level:
1.1 US qt (1.0 liter, 0.9 Imp qt)

or

API (American Petroleum Institute) classification SN with the
words “RESOURCE CONSERVING”

Engine oil capacity

ILSAC (International Lubricant
Specification Advisory Committee) GF-5, which can be identified with the ILSAC certification
mark (Starburst mark)

· Changing the oil and oil filter:
5.4 US qt (5.1 liters, 4.5 Imp qt)
· Changing the oil:
5.2 US qt (4.9 liters, 4.3 Imp qt)

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