My name is Tom Johnson. I was invited, by forum management, to participate on this ATF forum. I was asked to participate because I was the former Allison Transmission Fluids Engineer from 1990-2009. In this position, I had responsibility for review and approval of all transmission fluids for Allison commercial and military products on a worldwide basis. I'm here to help answer your technical questions specific to Allison fluid specifications (TES-389 and TES-295), Castrol TranSynd, fluid types (conventional vs. synthetics), fluid formulations and how they change with use and how to detect fluid changes (viscosity loss, oxidation and contamination) through transmission fluid analysis.
What I Do Now - Upon retiring from Allison Transmission and GM, I started JG Lubricant Services. We do oil and coolant analysis for many different applications, vehicles and equipment. We specialize in detailed transmission fluid analysis for Allison transmission products from the 1000 Series used in GM pickups and also are specialists in all other models including the 2000, 3000 and 4000 Series in trucks, buses and RVs. We can also analyze samples from the larger Off-Highway (5000-9000 Series) product lines.
PS: You can call me "Mr. TranSynd".
Last edited by MR_TRANSYND; 02/12/14 05:04 PM.