Originally Posted by KLEMMER
Just because it is below the low line doesn't mean there is a problem. When the engine is cold the level should be at the low line and rise to the full line when at operating temp.
Not quite. As long as there is enough coolant in the reservoir to cover the hose, when the engine is cool, you are okay .... but, you should refill the reservoir. You should check this often as it does evaporate. Always try to maintain the reservoir level at the full mark with the engine is cold. The reservoir capacity above that mark to the cap is for expansion (not the area between low and full).
Per the manual:
1. Check the coolant level on the outside of the reservoir while the engine is cool.
2. If the level is close to or lower than the “LOW” level mark, add coolant up to the “FULL” level mark.