Type IV fluids
""These have additional thickeners, which allows the application of a thicker fluid film and thus have significantly better holdover time performance. These properties do not come without some penalty however. Some type IV fluids have been observed to form a thick jell during dry-out and when re-hydrated form a slippery film on the aircraft. Also, some have exhibited poor "flow-off at colder temperatures"
Has anybody had any of these experiences?