Lexus GS300 1998 Owner's Manual page 429

ELECTRICAL COMPONENTS
(a) Checking by the fluid level lines (Maintenance type
battery only)
64G002
" 1 Upper line
2 Lower line (b) Checking by the hydrometer
The fluid (electrolyte) level must be between the upper
and lower lines.
When checking the fluid level, look at all six cells, not just one
or two.
If the level is lower than the lower line, add distilled water.
(See "Adding distilled water" on page 418.)
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