I am getting ready to R&R the brake fluid in my 1977 300D (I do this once a year as MB recommends and so far never replaced any brake component except pads). I am considering using synthetic brake fluid instead of non-synthetic because the synthetic does not absorb moisture as readily and should extend the time between brake fluid changes (also less chance of vapor lock and higher boiling temp.). Any comments/suggestions/observations on using synthetic brake fluid instead of non-synthetic brake fluid?

Tom