wolfe10 Report post Posted January 18, 2010 Hot off the press at Allison Transmissions: http://www.allisontransmission.com/servlet...mp;DownloadID=5 An excerpt: DEXRON®-III and DEXRON®-VI fluids are no longer approved for use in Commercial On-Highway transmission products and have been removed from the Allison Approved Non TES 295 fluids list. Transynd is still the preferred fluid, with "Allison Approved TES 389 fluids" acceptable. Brett Wolfe Share this post Link to post Share on other sites
