I've noticed over the past 3 months that the coolant level in the overflow bottle on my Jeep 4.0 has dropped about 1/4 to 1/2 inch.
Never noticed this before or any other fluid loss.
The engine compartment is clean as a whistle, no trace of any pinholes in the hoses, no fluid on the floor under the heater, and no sign of anything on the ground. The weep hole on the water pump looks okay, and no sign of anything weird in the oil.
Is it normal for this type of loss to occur?
The engine has 91k on it, I flushed and filled the system during the summer.