[sprat]

Hello all, I have been reading on the forum about the Dex and the green stuff and don't know which one to use. Suggestions please! here's specs:

120k, dark brown antifreeze in the vehicle now. I think it's about time to change before the New England weather this year. Do I do a complete flush with eguine coolant cleaner or flush it with water only and which one would you suggest to replace it with? the greeen or Dex? I hear the dex isn't the cheapest either, but if I use the green I'll use a name brand. Thanks for your help/replies!