2010 Toyota Camry Owners Manual - Page 396
2010 Toyota Camry Manual
Page 396 highlights
4-3. Do-it-yourself maintenance Engine coolant The coolant level is satisfactory if it is between the "F" and "L" lines on the reservoir when the engine is cold. Reservoir cap FULL LOW If the level is on or below the "L" line, add coolant up to the "F" line. (→P. 475)