2003 Subaru Forester Owner's Manual - Page 342
2003 Subaru Forester Manual
Page 342 highlights
Maintenance and service AMERI CA N ROLEUM PET IN -30 -20 -10 -20 0 20 0 40 10 20 30 40 60 80 100 ITUTE ST 5W-30* 10W-30, 10W-40 CE R T I FI E D HSB023AA HSB024BA New API Certification Mark (Starburst Mark) SAE viscosity number and applicable temperature *: 5W-30 is preferred. In choosing an oil, you want the proper quality and viscosity, as well as one that will add to fuel economy. 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. 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. Use only engine oil with the recommended grade and viscosity. - CONTINUED - 11-13
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