I have a 1997 V8 4.6L ford f150 supercab truck. I am changing the coolant and plan to remove the thermostat so I can flush out the coolant in the engine. Does this thermostat use a gasket or an " O" ring? If an " O" ring is used should I replace it with a new one when I put the thermostat back in or will the old one still seal properly?
Saturday, January 6th, 2007 AT 5:24 PM