Dot 5 Silicone fluid opinions

The silcone fluid is higher compressiblity, so ultimate performance is lower.

Because the fluid doesn't absorb moisture doesn't mean you don't have water in your brakes. So you may get water particles completely separate from the brake fluid.

In general I'd tell you to use a DOT4 like ATE Typ 200 in these cars and SL.6 in an ABS equipped ride.

In an ABS vehicle, it will perform better with low viscosity DOT4 by a lot. In these...doesn't matter there.

You wont find any OEM or any race team using DOT5 silicone. If it was better they would. They are using DOT4 borate ester based fluid.