2003 Lexus LS 430 Owners Manual - Page 376

ENGINE To ensure excellent lubrication performance for your engine, "Toyota Genuine Motor Oil" is available, which has been specifically tested and approved for all Lexus engines. Please contact your Lexus dealer for further details about "Toyota Genuine Motor Oil". CHECKING THE ENGINE COOLANT LEVEL 62L041 " 1 Reservoir cap 2 Upper line 3 Lower line 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. 362