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My2004 01-04-2011 02:36 PM

Coolant for 2004 5.7
I have just a general question. I noticed my cold level is low and was gonna add some antifreeze, and on the cap it said to use specific coolant. Is there some specific antifreeze to use? Or will prestone work?


CdnoilRAM 01-04-2011 02:45 PM

Does it say a specific coolant? Cuz I've been using prestone 50/50 in mine for a while.

My2004 01-07-2011 02:33 PM

The coolant is the orange color. Does Prestone have the orange color coolant?

RootBeer 01-07-2011 03:08 PM

I'd stick with the orange. You can likely get it at the local parts store. Here's what I found on the subject.

The difference between the two colors is that orange antifreeze contains a different type of corrosion inhibitor that has a much longer service life than silicates, phosphates and borates. Orange antifreeze contains organic acids that protect engine parts from corrosion. Silicate (green) type antifreeze does not mix with orange type antifreeze. Never mix the two colors in a cooling system. The organic acids in orange types will cause precipitation of silicates in the green type and corrosion protection is greatly reduced.

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