1998 Lexus GS 400 Owners Manual - Page 386

ENGINE 62G007-1 "GS400 "GS300 If the oil level is below or only slightly above the low level mark, add engine oil of the same type as already in the engine. Remove the oil filler cap and add engine oil a little at a time, checking the dipstick. The approximate quantity of oil needed to fill between the low level mark and the full level mark on the dipstick is indicated below for reference. When the level reaches within the correct range, return the filler cap and turn the cap clockwise until you hear a click. Oil quantity. L (qt., lmp. qt.) 1.8 (1.9, 1.6) NOTICE Avoid overfilling, or the engine could be damaged. Check the oil level on the dipstick once again after adding the oil. 373