Neatsoil or oil of any kind will actually shorten the life of a leather saddle. It over softens the leather making it sag more thus having to tighten the spanner bolt more which in turn will cause the rivets to pull through the leather. Hopefully you only used a little bit. From now on all you need to do is use the Sno Seal or Proofide to keep it preserved. Another word of caution in regards to the Spanner bolt, only tighten it 1/4 th a turn at a time or you could over tighten and cause the the saddle to tear.