Subaru Legacy Quiz
Maintenance and service

Recommended grade and viscosity

In this manual: Maintenance and service
About vehicle — 35Seat, seatbelt and SRS airbags — 72Keys and doors — 60Instruments and controls — 106Climate control — 43Audio — 92Interior equipment — 38Starting and operating — 85Driving tips — 47In case of emergency — 20Appearance care — 16Maintenance and service — 105Specifications — 16Consumer information and Reporting safety defects — 23
~1min read

CAUTION

Use only engine oil with the recommended grade and viscosity.

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.

Test yourself

A quick Subaru Legacy quiz: every answer comes with an explanation and a link to the manual page.