I have just purchased a 97 Grand Marquis LS with 148,xxx. Previous owner replaced lower intake with the upgraded metal and composite. The question I have is what color antifreeze should this car be running for this model year? Did Ford do the Dexcool stint like General Motors? I have always seen green in my Fords but this is not green antifreeze.

What is everyone running in there 4.6? Thank you! Tim

 

they make green or universal that is yellowish... go green in it

 

green is really good but i always go with the shellzone elc in my cars(red) mainly because it is premixed and that is the longest lasting on the trucks i work on but those are disels (18 wheelers like petes and freightliners) if i'm wrong or misguided some one please let me know

 

Well, I am finding the antifreeze was probably green at one time, similar to a 2001 Ford Widstar I worked on. I know this antifreeze in the Grand Marquis cannot be too old due to the intake change. I dont know why these newer cars turn the antifreeze brown like this. My older cars have never had this problem