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2004 6.8l V-10 2 valve / Coolant: "VC-7-B" only?

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Old Oct 12, 2025 | 03:25 PM
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2004 6.8l V-10 2 valve / Coolant: "VC-7-B" only?

I have the: 2004 6.8l V-10 2 valve

There is VC-3, VC-7, VC-13 out there available, all at different prices.

My owners manual states: VC-7-B - is this still the only motorcraft coolant we can use in the 2 valve 6.8l gas engine?

Thank You
 
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Old Oct 28, 2025 | 01:05 PM
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I drained the coolant for the second time, almost all of it was the Tap Water I poured into it after replacing the Thermostat while the truck was still at the auction Yard area.
I put in 3 gallons of distilled, while idling, got engine temp up to normal operating temp then re-drained the cooling system again, hoping to get the Tap Water out of the block.
I then re-filled the cooling system with 2 gallons of the Motorcraft Gold VC-7-B ($46 ea.) and the rest with Distilled water. It should be good to go for several years now
 
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Old Oct 28, 2025 | 11:41 PM
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Yeah, it should. I use the universal Prestone and haven't had issues FWIW.
 
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