According to the 2005 Ford Mustang Owner Guide :
The cooling system capacity is 13.6 quarts ( 12.9 liters )
So , a 50 / 50 mix of antifreeze and preferably distilled water would require :
( 6.8 quarts / 6.45 liters of antifreeze )
* Ford shows not to use less than 40 % antifreeze and not to exceed 60 % antifreeze in the cooling system mixture *
The 2005 - 2009 Mustang GT has 300HP.
The 2005 Ford Mustang GT has 300HP
The 2005 Ford Mustang V6's have 210HP
The 2005 Ford Mustang GT has 300HP
use half water half antifreeze to the fill level
The 2005 Ford Mustang GT has 300HP
The 2005 Ford Mustang V6's have 210HP
a 2005 mustang weighs 3450lbs with a V-8 4.6 liter engine
You'll usually see a "Fill Line" on the reservoir bottle, fill it to there.
today's antifreeze is very much standardized. you go to any auto supplier buy a standard antifreeze and follow the instruction will give you a new fill of antifreeze
The 2005 Ford Mustang with a 4.0 V6 came stock with 210 horsepower.
If it has a 4.6 V8 it needs 1 3/4 Gallons antifreeze and then fill with water.