The very best way to handle this is to ask a Detroit dealer. It's free and will save you a lot of grief. They will, of course, try to sell you their brand ($$$) but ask them for an equivelant brand.
I have used NAPA Extended Life in mine for many years with out a hint of rust or chemical reaction. It's made for use in engines made from aluminum or any other metal and combinations there of, gas or diesel. The formula is the same as Detroit requirements and is good for five years or 150,000 miles. The 50/50 Prediluted is good for -34 degrees freeze protection. It's green but mixes with all.