1994 toyota camry v6 will not draw coolant from resevoir. no apparent leaks but continues to use excessive coolant. no oil in water. 492000 miles. yes 492000 is correct.
You might be burning it. Pressure test your coolant system and or perform a leakdown/pressure test of your engine cylinders.
If not drawIng in coolant, you may have a bad radiator cap which is allowing air to be sucked rather than the coolant to be drawn into the radiator during cool down.
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