Had Jiffy Lube change my antifreeze in my 04 6.0 and I asked them if they had the correct ford gold coolant. THey said that they use their green antifreeze and then add the motorcraft additive to it and it works fine. Well now that I think about it more, I have become concerned if I should drain it back out and put the correct stuff in. What do you folks think?? Is Jiffy Lube right??