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I have a 2015 JK Sport with 14,000 miles. Today I noticed the coolant level was just below the MIN on the resevoir. After driving it as well as leaving it sit, the level hasn't changed. Cause for concern? Any help would be appreciated.
 

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If the radiator is full, the level in the bottle should go up as the engine heats up, and go down as the engine cools, staying between the max and min marks.

With a cold engine, remove the radiator cap and see if the radiator is full. If it's not full, top it up with 50/50 mix of OAT coolant. Also bring the level in the bottle to above the min mark.

Drive it and see if the level in the bottle behaves normally.

Look for signs of coolant leaks right after you shut the engine off, and again when it cools. Pay particular attention in the area of the water pump.
 

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also remember 14 on up take OAT not HOAT. don't over fill if you wheel or you end up slopping coolant out the reservoir. I would only add to just a tad above the min line and not to the max line. I made that mistake once never again.
 
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