NOTE: After a little investigation it is clear I have no idea what I am talking about
![Smile :) :)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png)
![Smile :) :)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png)
![Smile :) :)](https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png)
. It appears that DOT5 is silicone based which will not mix. The ATE Blue/Gold which I have been using for years is synthetic and compatible with DOT3/4 fluids.
HTH,
LarryB