JD came to the unit yesterday to have his Brembos fitted and as it was a nice day we thought we would address this hydro issue. We tried IPA, eraser, clay and even tripple by machine. This stuff has such a good physical bond with the paint it wouldn't shift at all. We had to break out the rotary, hex pads and Menz 2500, JD was also doing the same with the DA.
We got the hydro off and the car looked bloody awesome in the short space of time we had. A quick 50/50...
JD has more pictures of reflective goodness.
We still don't know what causes it in the first place but best guess is reacting with c2v3. It won't put me using it again as I still bloody love the product.