Originally Posted By: Fortecarbon
I believe Chrysler/Jeep uses G-05, because the Mercedes guys seem to think that a Jeep dealer is a cheaper way to get a jug. I have no idea what Ford specs... but c'mon, there is no way that GM vehicles are so different from Chrysler, and Ford (and probably every other manufacturer)in terms of metallurgy or coolant needs. They probably all buy radiators from the same place, all have aluminum or iron block, aluminum heads, water pump gaskets, bearings, plastic, etc etc.
Chrysler quit using G-05 in 2014- their OEM "Red" coolant is G-05, their current OEM "Purple" coolant is... something else. Not sure what, haven't researched it. Ford "Motorcraft Gold" is G-05, exactly the same as Chrysler G-05 and Zerex G-05, except the Chrysler (Mopar brand) is dyed red instead of yellow. Yellow is really hard to see in the overflow tank, red makes it easy but looks an awful lot like DexCool so can be confusing to techs. Ford has also phased out G-05 for a newer coolant and again I'm not really sure what they settled upon.
As for metallurgy, I beg to differ with you. General Motors made a very careful and deliberate effort to eliminate iron, lead, zinc, tin, and copper alloys from their whole cooling system after the initial round of problems with DexCool. There's not a speck of solder, a piece of iron, and very little copper (oil-to-water coolers, maybe) in a GM cooling system. Chrysler, on the other hand, still produces iron block engines with aluminum heads, water pumps, etc., using the higher strength of iron to pretty much match the weight of a GM block because less volume of iron is needed. GM also studiously removed all plastics that were subject to deterioration when exposed to 2EHA in Dexcool. A modern GM system is truly 100% "ready" for DexCool, but a Ford or Chrysler (or Benz, or Toyota, or BMW) system is not. GM definitely did it backwards by switching to DexCool and then finding/eliminating all the failures using customers as test cases, but they did get there ultimately.
I'm not a fan of DexCool and I consider it to be the absolute *least* universal coolant out there... but it does work extremely well in GM vehicles that are meticulously prepared for it. Member SteveSRT8 has attested to it in his company's fleet trucks that *never* get a coolant change until a component fails, and never see corrosion or other problems