Mechanics

HOW TO FLUSH AND FILL COOLING SYSTEM ON A OLDS 4.0 NORTHSTAR ENGINE

1999 Oldsmobile Aurora • 155,000 miles

Should thermostat be changed if over 5 years old?
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1013jess
November 15, 2011.




You should replace it-Open the drain plug and keep flushing it till it clears up then put fresh coolant in keep filling it till it wont take it-make sure heater is on high-

Tiny
Rasmataz
Nov 15, 2011.


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