2003 Chevy Astro coolant

Tiny
DBOCKLET
  • MEMBER
  • 2003 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 450,000 MILES
I want to replace radiater coolant I need to know how to flush out old fluid, & how much fliud it takes to refill
Thursday, May 21st, 2009 AT 8:52 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Drain the old coolant from the petcockl at the bottom of the radiator. Based on what brand of radiator flush you purchase will determine the process. The manufacturer will have the directions on the container. Also, if you only flush the radiator, figure around 1.5 gal 50/50 mix of coolant / water. Make sure to use the proper type of coolant. DO NOT MIX FACTORY DEXCOOL WITH ANY OTHER TYPE OF COOLANT.
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Monday, June 1st, 2009 AT 9:30 AM

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