I put Dexcool or equivalents in everything I own, and so far no problems at all as long as the instructions are followed. I do use distilled water in everything, though, so that may be a factor. From what I've experienced, the Dexcool stuff is great. Change it once every five years, and no corrosion problems at all.
One thing you've got to make sure of is that you flush any and all old antifreeze out of the system before switching to Dexcool. If there's any of the old green stuff in there, it will react with the Dexcool and cause some bad things to happen. I made the mistake once of doing a drain-and-refill from green to pink without a proper flush, and my hoses started falling apart within a few months and my water pump bearings went out within a year. Might have been coincidence, but a few of the people I have talked to seem to have experienced similar problems.
If you drain all of the old stuff out, then fill with plain distilled water and run the engine to max operating temperature, drain the distilled water out, and then fill with the Dexcool/distilled water mixture, you probably won't run into problems.