Brian; What is a high mileage car needing more than an yearly change. As daily drivers, I was sticking with the once a year scenario...but with fluids seeming to break down a bit sooner in other areas, well, just wondering. rik
I have really only had problems with it in 360's transmissions that are driven quite a bit annually and in cars that see very sporadic use and live in high humidity. SF and some areas of Marin have problems with humidity. In your car I would just think about the annual miles and how long you feel comfortable running motor oil.
Myself, I use Motul 600 RBF (racing brake fluid). I believe it was Brian who suggested it years ago on Ferrarichat if I'm not mistaken I use it on my Yamaha R1 also. Ray
We use what Ray said because we do not always know where a car is headed when it leaves here. It is a racing brake fluid and can take whatever the customer does to the car. It will absorb water a little faster than some more ordinary fluids but we change every year so that is really not an issue.
I have no preferences in coolant. ATE Blue racing fluid is very ordinary stuff by todays standards. Many new cars come with fluid that out performs it. By my own testing with a Daytona (that car will test brake fluid) on Laguna Seca many conventional DOT 4 fluids that make no claim to being a racing fluid out performs the stuff. I really cannot understand why so many cling to it. With fresh fluid a Daytona will only go 4 laps before that stuff boils. Actually before lap 4 is over so is the fluid. It was probably great in 1979.