Application Bulletin: ZDDP alternative for Universal Tractor Transmission Oil (UTTO)
Ultrium™ 6700 - Zero-SAPS, Ashless Anti-Wear Technology as a replacement in lubricant formulations
The drive to minimize sulfated ash, phosphorus and sulfur (SAPS) content in universal transmission oil formulations has intensified primarily to address debits of fluid degradation, accelerated wear of transmission components and loss of optimum friction control.
Traditional anti-wear additives such as ZDDP, while highly effective in boundary lubrication regimes, exhibit inherent thermal instability that promotes the formation of sludge and varnish, initiating progressive loss in lubrication performance. This necessitates the development of next-generation additive chemistries that not only preserve robust anti-wear protection but also ensure optimal clutch friction characteristics, gear and bearing durability, and overall transmission efficiency across a broad operating envelope.
Ultrium Technology in ActionAurorium Ultrium® 6700 is an advanced multi-functional polyester-based additive technology engineered to meet the evolving performance and durability demands of Universal Tractor Transmission Oils (UTTO). Its ashless, sulfur- and phosphorus-free structure delivers oxidative stability and minimizes deposit formation. The additive exhibits strong synergistic interactions with conventional ZDDP-based anti-wear systems, enhancing film formation and wear protection across boundary and mixed lubrication regimes. Ultrium 6700 also contributes to optimized friction critical for wet brake and clutch systems, while supporting fluid longevity under high thermal and mechanical stress typical in agricultural transmission and hydraulic systems. | 
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Key Features of Ultrium 6700 Additive Solution in UTTO:
- Minimize Environmental Impact
Free of sulfur, phosphorus, and metals – ideal for environmentally sensitive applications - Multi-functional Design
Delivers both anti-wear and yellow metal protection in a single molecule - Thermal Stability
Delivers superior oxidation stability to extend fluid life under high temperature - Security of Supply
Reduce complexity in formulation with globally available material
Why Choose Ultrium 6700 for your UTTO Formulations?
Ultrium 6700 functions by developing a robust boundary film on the gear and bearing surfaces providing asperity level wear protection. In addition to good friction control and improving lubricity, Ultrium 6700 also contributes to yellow metal corrosion protection improving the reliability of the UTTO under demanding operating conditions. These attributes make Ultrium 6700 a premier choice for UTTO formulators seeking to improve hardware protection and system efficiency – in new product development and as a top-treat to existing lubricants. |
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Performance Comparison: Ultrium 6700 as a top-treat in commercial UTTO
Getting Started with Ultrium 6700
To learn more about how Ultrium 6700 can improve your UTTO lubricant formulations, visit Aurorium.com for technical datasheets, performance insights, and contact us directly for customized recommendations.