I guess with all the talk about changing the PTU,RDU,Trans,coolant fluids we sometimes neglect the changing of something that has only to do with stopping our cars and thats brake fluid,with moisture being a factor probably going to change the fluid soon and two quarts might be beneficial,probably go with Redline or Amsoil. Z http://www.amsoil.com/shop/by-product/other-products/brake-fluid/series-600-dot-4-racing-brake-fluid/ http://www.redlineoil.com/product.aspx?pid=148&pcid=29