I tried it once in my 74 Olds Custom Cruiser One advantage to it is that since it has a higher boiling point than other coolants, you can run it in your car without pressurizing the system. We had a member here some years ago who was a strong advocate of it in older Benz's just because of this. It's particularly helpful at higher altitudes where boiling points are reduced. This was my motive in trying it. However, I ended up selling the car before having a chance to use it in a variety of conditions so I can't comment on its effectiveness. I've heard cats give it strong reviews.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13