2001 Lexus GS 300 User Guide 1 - Page 273

ENGINE Oil identification marks CHECKING THE ENGINE COOLANT LEVEL 62L006-1 62G004-1 "API Service Symbol "ILSAC Certification Mark " 1 Reservoir cap 2 Upper line 3 Lower line Either or both API registered marks are added to some oil containers to help you select the oil you should use. D The API Service Symbol is located anywhere on the outside of the container. The top portion of the label shows the oil quality by API (American Petroleum Institute) designation such as SJ. The center portion of the label shows the SAE viscosity grade such as SAE 5W-30. "Energy-Conserving", shown in the lower portion, indicates that the oil has fuel-saving capabilities. D The ILSAC (International Lubricant Standardization and Approval Committee) Certification Mark is displayed on the front of the container. Look at the see-through coolant reservoir when the engine is cold. The coolant level is satisfactory if it is between the"FULL" and "LOW" lines on the reservoir. If the level is low, add ethylene-glycol type coolant for a proper corrosion protection of aluminum components. The coolant level in the reservoir will vary with engine temperature. However, if the level is on or below the "LOW" line, add coolant. Bring the level up to the "FULL" line. Always use ethylene-glycol type coolant for a proper corrosion protection of aluminum components. See information in the next column. 255