safetypee raises a number of valid issues. With regard to points 1 and 3, these areas are covered in the US and Canada by the FAA and Transport Canada, however, within Europe they still do not appear to have been addressed by the regulatory authorities. The basic procedures are available from the AEA, fluid specifications from the SAE and appropriate test houses (certify fluids meet the aerodynamic, holdover and materials compatibility requirements of the appropriate specification) have previously been approved by the FAA and TC. However, until points 1 and 2 are addressed within Europe and the loop effectively closed, misunderstandings will continue to occur as to whether a specific fluid has, or has not, been certified for use on a particular aircraft type.
As an example, you may wish to check the Maintenance Manual of the aircraft you operate, in order to establish whether the fluid mentioned earlier in this thread has been certified by the aircraft manufacturer.
With regard to point 2, it would be the responsibility of the aircraft manufacturer to establish whether a fluid is ‘aerodynamically’ acceptable, prior to use on a particular aircraft type.
Apologies, last sentence in the first paragraph of the above should have read,
"However, until points 1 and 3 are addressed within Europe and the loop effectively closed, misunderstandings will continue to occur as to whether a specific fluid has, or has not, been certified for use on a particular aircraft type."