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Old 06-19-2018, 01:15 PM   #2
WoodBoss
"Old School"
 
Drives: 2010 2SS L99
Join Date: Apr 2015
Location: Sherrills Ford, NC
Posts: 1,295
I would flush it out, change the thermostat and use dexcool or compatible dexcool Prestone. When you refill, add from the radiator cap, the reservoir and from the top hose of the radiator right into the block, these cars a tough to get all the air out. See the link below for a thermostat replacement video.
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