Not questioning Grahameo, but according to the Safety Data Sheet the toxicity of Super Blue to the environment is identical to that of Type 200 which is the "safer alternative", and that includes the Biodegradation.
It is illegal in Florida BTW, but I'm not in Florida and close friend of mines car passed its MOT using Super Blue.
I know exactly what you mean mate... The only element that is illegal is the toxicity of the dye itself that they use in it... Inherently, it is very, very difficult to actually pigment any brake fluid simply because of its discolouring properties... Drop some food colouring or ink into some spare fluid and you will see it vanish.
I don't make the rules I'm afraid... I just have to enforce them but what I can gather from the boffins is the only reason why it was allowed to be sold in the EU was because it was chemically identical to ATE 200 as a complete product... But when investigated further, the dye has a chemical compound in it in order for a molecular bond to take place and that's the the compound that is banned.
Sorry but I can't remember what it is exactly called and couldn't spell it properly anyway
but its on the national government poisons list and can't be carried by ADR hauliers on the road network in bulk, only by rail.
When you consider exactly what can be carried on the road, that must be pretty nasty stuff.
From what I have been told from the EA, apparently 300ppm is enough to contaminate a waterway with a mortality rate of 60% of local wildlife affected as far as a mile down stream...
Sorry I'm not a chemical expert, I'm just regurgitating the info in lay mans terms that we are given
As for MOT's and passing with it... Well thats simply because the nominated tester can not actually remove the fluid reservoir cap during the test, he can only check for tightness of the cap, visual inspection of the outer marker for a safe level and pipes/ seals for leaks... It would actually look dark to him
Nominated testers at independent MOT testing establishments have been informed though and are actively encouraged to contact VOSA with registration details if they suspect fluids like blue dye, red diesel are used on the vehicle when presented for test... In order to save animosity from reprisal VOSA scan registraion plates with VASCAR and wait for the offending vehicle to appear on the road eventually and then the vehicle is stopped for a routine roadside check, Trust me...90% of checks aren't coincidence