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Pontiac
Grand Prix
Engine Cooling
What does it mean when your antifreeze is a muddy color?
2004 PONTIAC GRAND PRIX
162,809 MILES
TRICEE2804
MEMBER
1 POST
We use Dex-coolant its orange not green.
Apr 21, 2012 at 8:49 AM
JACOBANDNICKOLAS
✓
Experienced Mechanic
110,244 POSTS
If you never mixed coolants, just service the cooling system. It is really dirty. It may take a couple flushes to clean it.
Apr 21, 2012 at 9:39 AM
DJCL
✓
Experienced Mechanic
767 POSTS
Have it serviced and pressure tested. The dexcool coolant is this car was known to get like that is the system went low and sucked in air .
Apr 21, 2012 at 10:27 AM
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