2004 Lexus GX 470 User Guide - Page 589

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 " 1 Reservoir cap 3 "L" (lower) line 2 "F" (upper) line Look at the see-through coolant reservoir when the engine is cold. The coolant level is satisfactory if it is between the "F" and "L" lines on the reservoir. If the level is low, add the coolant. (For the coolant type, see "Coolant type selection" described below.) The coolant level in the reservoir will vary with engine temperature. However, if the level is on or below the "L" line, add coolant. Bring the level up to the "F" line. 566