| Here is a tip for bleeding your
cooling system after replacing any coolant components, including
the thermostat. (After any coolant system repair the thermostat
should be replaced, it is a wear item and in most cases
inexpensive.)
Trapped air causes hot spots and is not easily removed in
some cases.
Put a little aspirin tablet in the thermostat to hold it
slightly open. If the thermostat sits vertically, place the
aspirin tablet at 12 o'clock.
Follow your car manufacturer's instructions for bleeding
procedures. The aspirin will allow air to escape and will
dissolve in the cooling system, causing no harm. Normal aspirin
works the best.
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