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Motorcraft VC7 or VC5 for Ford Excursions #4529116
09/29/17 07:00 AM
09/29/17 07:00 AM
Joined: Sep 2017
Posts: 2
Illinois
Twonky Offline OP
Twonky  Offline OP
Joined: Sep 2017
Posts: 2
Illinois
Does any one know why Motorcraft VC7 "gold coolant" is recommended for '02-'05 Excursion and the '00-'01 Excursions get the green coolant VC5. What changed between the model years that would require a change in coolant? Why isn't VC7 backwards engineered/approved for '00-'01 Excursions like Mercon V was for their transmissions?

Re: Motorcraft VC7 or VC5 for Ford Excursions [Re: Twonky] #4529129
09/29/17 07:14 AM
09/29/17 07:14 AM
Joined: Apr 2008
Posts: 12,991
Onondaga County
Miller88 Offline
Miller88  Offline
Joined: Apr 2008
Posts: 12,991
Onondaga County
If you were to completely flush the cooling system, you could run the older style coolant.

02 is just when ford switched on the gas superduty/excursion.


18 Forester 2.5I 6M
00 Jeep Cherokee
01 Ford F-350 XL 4x4 5M
Re: Motorcraft VC7 or VC5 for Ford Excursions [Re: Twonky] #4529131
09/29/17 07:15 AM
09/29/17 07:15 AM
Joined: Oct 2008
Posts: 12,654
The Old North State
Sayjac Offline
Sayjac  Offline
Joined: Oct 2008
Posts: 12,654
The Old North State
I'm speculating here, but I doubt anything major changed about the engine including the seals and gaskets. Further I'd say Ford just wanted to go to a longer life AF and G05/MC Gold HOAT filled the bill.

And while not back spec'd for the original green AF, I can think of no reason why MC Gold wouldn't work fine in those applications. Longer service life than original green, lower silicates and no worries about 2eha used in Dex and universal clones. I'd do a complete exchange if switching from OG to G05/MC Gold.

Re: Motorcraft VC7 or VC5 for Ford Excursions [Re: Twonky] #4529955
09/30/17 12:00 AM
09/30/17 12:00 AM
Joined: Sep 2017
Posts: 2
Illinois
Twonky Offline OP
Twonky  Offline OP
Joined: Sep 2017
Posts: 2
Illinois
I need to change my radiator and I'm looking for the best coolant option. I will do a complete flush before adding new coolant. I just don't understand why ford changed from MC VC5 to MC VC7 after 2002 model year. I want to understand why and if I should switch to MC VC7 since my excursion is a 2000 and speced for MC VC5.


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