How do you replace the thermostat located on a 1988 Subaru dl?
Anyway, it is located in the lowerr radiator house, at the
engine, when the engine is cold drain the coolant, remove the lower
hose, pop out the thermostat, remove gasket, clean surface and
replace. Fill with coolant, let it get warm, then add more coolant
when the new thermotat opens up.