Subaru Impreza Manuals 2015 Impreza Owner's Manual | Page 557

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. Oil grade Engine oil capacity – Adding the oil from low level to 0W-20 synthetic oil is the required oil full level: for optimum engine performance and 1.1 US qt (1.0 liter, 0.9 Imp qt) protection. Conventional oil may be – Changing the oil and oil filter: used if synthetic oil is unavailable. 5.1 US qt (4.8 liters, 4.2 Imp qt) *: If 0W-20 synthetic oil is not available, 5W-30 or 5W-40 conventional oil may be used if replenishment is needed but should be changed to 0W-20 synthetic oil at the next oil change. or API (American Petroleum Institute) classification SM with the words “ENERGY CONSERVING” or SN with the words “RESOURCE CONSERVING” SAE viscosity No. and applicable temperature ILSAC (International Lubricant Specification Advisory Committee) GF-4 or GF-5, which can be identified with the ILSAC certification mark (Starburst mark) – CONTINUED –