If your engine was built at the kentucky engine plant then it has the yellow or gold coolant. Check your vin all 2002 F-Series built at the Kentucky truck plant VIN 11th digit "E". Make sure you don't have green in it now though as you can't switch to gold if it has green in it
That's VERY interesting... I DO have an "E" in the vin there so that means it HAD to come with the "Yellow" stuff?
Maybe, at some time in it's history, some boob
added green to the system to account for the green tint it now has.... (all the more reason to flush it out now I guess)
The owners manual says it could have either.... now it might have both
Who told you that? They lied to you. When all the hype about the Gold came out many of use with 99-2001 PSD owners fell for it and switched to Gold. As long as you get all the green out there is no problem with running the Gold, the same is true whenever changing coolants though. However the Gold is not a very robust coolant and all the hype is just that hype. Do this test for yourself. Take a brand new jug of the Gold Ford coolant and dilute it 50/50 with distilled water and test for nitrites ( cavitation protection) the bare minimum suggested is 1200 ppm with the ideal level being 1800-2000 ppm, the Gold will test out at only 800 ppm, way below min protection. All the hype about it being good for 100K is nothing but BS. It took 2 bottles of NapaKool to get my protection up to par. I am glad I only ran it for a short time before learning about the true ELC coolant, like the Fleetrite ELC. This coolant is truly maintenance free to 300K and if you use the extender at 300K it is good to 600K. This is the coolant used in the OTR trucks. It is approved by Navistar in all engines from midd 99 and up. You won't find it any auto store, look in the phone book for a International dealer, they will have it on the shelf.
I am not saying the Gold coolant is going to destroy your engine, what I am saying is it doesn't protect your engine the way Ford wants you to think it does, don't believe me do the test for yourself. BTW the brown color comes from tablets Ford puts in the coolant that disolve over time. They are suppose to keep corrosion down. I would also add a coolant filter if you are doing a coolant change.
PM me for more info if needed.
So, how could I be sure I got ALL the remains of any green out? Maybe Fords Premium (Yellow/Gold/whatever) isn't as incompatible with the green as the orange (DexiCool etc.) is because I understood that mixing THEM together (in ANY quantity) was a disaster!!!
What does everybody think of that Prestone "Universal
" coolant that is supposed to be compatible with either? If I've got some mix in there now, maybe it would be a good solution?
Do I do a flush and use the green I've already got kicking around (and who KNOWS where else I'm ever going to use it) with the additive I just bought....
Or is going to the dealership and plunking down the big-bucks for the genuine FoMoCo stuff the right thing to do?
Thank You ALL Very Much for your opinions....