Description
Mobil Delvac 1™ Transmission Fluid 50 is a fully synthetic, manual transmission lubricant engineered to meet the most demanding extended drain and OEM warranty requirements. It is recommended for year-round lubrication of manual transmissions in light to severe duty on- and off-highway equipment operating in a wide range of environments. Designed to provide maximum protection and extended operating life to heavy duty transmissions, Mobil Delvac 1 Transmission Fluid 50 provides significant advantages over conventional sulphur-phosphorus gear oils, including outstanding high-temperature performance, oxidation stability, wear protection, and corrosion control.
It has the same viscosity as most SAE 50 engine oils and SAE 90 gear lubricants at the high end of the temperature-viscosity scale, and because of its inherently high viscosity index, it provides stronger film strength at higher temperatures than conventional oils. Mobil Delvac 1 Transmission Fluid 50 also ensures effective lubrication at below freezing temperatures without channelling.
Outstanding performance is confirmed by approval against the Mack TO-A Plus 500,000 mile extended service classification for Mack T300 series manual transmissions. Mobil Delvac 1 Transmission Fluid 50 meets or exceeds the requirements of the API service MT-1 classification and is recommended by ExxonMobil for use in transmissions and gear cases where API Service GL-1 through GL-4 (non-EP) gear protection is required.
Features and Benefits
Mobil Delvac 1 Transmission Fluid 50 delivers exceptional performance in today’s manual transmissions. The key benefits include:
| Features | Advantages and Potential Benefits |
| Excellent load carrying, anti-wear, and EP performance | Extends transmission life and reduces cost of operation |
| Outstanding protection against deposit formation | Longer seal life, extended drain and service intervals |
| Maximum protection from corrosion of copper and its alloys | Protects and extends the life of synchronizers |
| Optimized thermal and oxidation protection | Extends component life and improves efficiency |
| Exceptional shear stability | Minimizes wear during severe operation |
| Outstanding low-temperature fluidity | Reduces wear during cold temperatures and improves shifting with quicker starts |
| Extended drain and service interval capability | Provides lower operating costs and higher productivity |
Applications
Recommended by ExxonMobil for use in:
- Heavy-duty manual transmissions where extended service intervals and warranties are required
- Commercial line haul, vocational, off-road, pick-up and delivery, and bus applications
- Use as a companion with Mobil Delvac Synthetic Gear Oils in rear axles for maximum component life, service efficiency, and fuel economy improvement
- NOT suitable for hypoid gear applications in differentials and final drives, either for topping-off or refills, where API service GL-5, MIL-PRF-2105E or SAE J2360 lubricants are specified
Specifications and Approvals
This product has the following approvals: Navistar, Inc. MPAPS B-6816 Type 1 ZF Freedom Line Mack TO-A Plus Properties and Specifications
Property Grade SAE 50 Density @ 15 C, kg/l, ASTM D4052 0.86 Flash Point, °C, ASTM D92 221 Kinematic Viscosity @ 100 C, mm2/s, ASTM D445 17.5 Kinematic Viscosity @ 40 C, mm2/s, ASTM D445 132 Pour Point, °C, ASTM D97 -45 Viscosity Index, ASTM D2270 146
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