Arrived in time (not bad considerIng that it was Christmas time) in good condition. I already replaced the fluid of my rear brakes and I do not have any complains, the work good. I did not notice any improvements with the previous one but the old one seemed to be still in good shape. It ss not the original oil of Shimano although the description indicates that it is valid for Shimano. The color is the same. For the price I paid for me looks as a very good purchase. I bought 2 bottles just in case and to have for further replacements but it might be more than enough with one (only 17 ml for the rear brake circuit).
Works well. Alternative for shimano mineral oil. Fast shipping.