Quote:
Originally Posted by FRS_KOTO
low on reservoir when cold . Dealer top it off when it was hot.
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It is supposed to be low in the reservoir when cold. It works by pushing coolant into the reservoir when it get hot and expands. When the engine cools down it sucks it back into the rad. It is an expansion reservoir so that it doesn't just spill onto the ground when the engine is hot. It is not a fill to this line type situation like brake fluid or such. Even when the engine is hot it will not always fill the reservoir since there is no set amount of flow back and forth. As long as there is some in there at all then you are fine. If you fill it too much when cold then it will just push the excess out when it heats up.