Exhibit 99.13 (Text of graph posted to Ashland Inc.'s website concerning Valvoline's lubricant sales gallons 3 Month Rolling Average (millions) 2002 2003 2004 2005 2006 2007 ------ ------ ------ ------ ------ ------ January 15.1 14.3 13.6 13.1 13.1 12.3 February 15.0 14.5 14.5 12.9 13.2 12.7 March 16.2 16.2 15.8 14.1 14.7 April 17.1 16.7 16.8 15.1 15.0 May 18.1 17.2 16.9 16.0 15.6 June 17.9 16.4 16.7 16.0 15.0 July 17.0 16.6 16.8 15.4 14.7 August 17.3 16.4 16.5 15.0 14.4 September 17.8 17.1 16.8 14.7 13.7 October 17.5 17.3 15.6 14.5 14.0 November 16.0 16.1 15.3 13.7 13.2 December 14.8 14.6 13.7 12.8 12.8