Thermostat replacement - Toyota Corolla Spacio, 1.8L, 1999

After studying numerous forums on the topic of gasoline consumption, increased by H.H. revolutions, cool stove, decided to approach the issue radically.
Replacing the standard thermostat at 82 degrees

to the thermostat from the 1G engine at 88 degrees - this will not give overheating, but the engine goes into operating mode faster and does not cool down longer when parked.

At the same time, about 1 liter of antifreeze poured out

topped up with distilled water.