Customer Benefits
Reduces maintenance costs – ISOSYN® technology, including a combination of high performance hydrocracked base fluids and specially balanced metallic detergent and ashless dispersant additive system, provides excellent overall engine cleanliness in all service conditions. ISOSYN® technology also confers the high degree of soot dispersancy required to maintain oil drain intervals in modern engine designs. Exceptional oxidation stability protects against the formation of gums and varnish at elevated temperatures.
Prolongs engine life – Efficient dispersant combination plus proven metallo-organic anti-wear additive system provides excellent protection against wear of critically loaded components under all operating conditions. Multigrade viscosity provides additional protection against wear at start-up and under high temperature operating conditions.
Preserves power and performance – Outstanding metallic detergent additive system preserves power and performance by providing excellent upper-ring-belt deposit control. Carefully optimized viscosity modifier package minimizes impact on engine efficiency from high SAE viscosity grade.
Product Features
Delo® Gold Ultra SAE 20W-50 is formulated with ISOSYN® Technology.
Applications
- The following applications whenever the manufacturer recommends SAE 20W-50 grade:
- Mixed fleets of diesel engines (high speed, four-stroke, turbocharged or naturally aspirated)
- Four-stroke gasoline engines in mixed fleets of diesel and gasoline engines
- Commercial road transport
- Off-highway vehicles
- Agricultural tractors and farm machinery
- High speed diesel engines in marine service (e.g., fishing boat, river transport)
- Diesel engines utilizing diesel fuels with up to 30% biodiesel (B30)*
Product Approvals, Performance, And Recommendations
Performance
- API CI-4/SL
Service Considerations
For vehicles fitted with diesel particulate filters (DPFs), Delo 400 LE or Delo XLE Multigrade should be selected in accordance with the manufacturer’s recommendations. The use of these low SAPS (sulfated ash, phosphorus and sulfur) products will maximize intervals between filter cleaning.
While modest by typical heavy duty diesel standards, Delo Gold Ultra has a level of phosphorus higher than permitted by certain recent standards for passenger car motor oils, e.g. ILSAC GF-5, and the ACEA “C” standards. Optimum life of catalytic emission control systems will be achieved by using oils of the performance standard recommended by the vehicle manufacturer.
When using with biodiesel blends containing >6% B100, monitoring oil condition is critical. Fuels with higher biodiesel content increase the risk of fuel dilution in the engine oil. This reduces the oxidation stability of the engine oil as biodiesel tends to oxidise more rapidly thus directly impacting the oil drain intervals. Biodiesel contents greater than B6 have a lower energy content than diesel fuel, which may result in slight horsepower loss and slightly increased fuel consumption.
Always follow OEM recommendation for appropriate fuel and engine oil selection.
Typical Test Data
| DELO® GOLD ULTRA SAE 20W-50 | Test Method | Results |
|---|---|---|
| SAE Grade
Product Code |
20W-50
500645 |
|
| Base No., mg KOH/g | ASTM D2896 | 10.2 |
| Sulfated Ash, m % | ASTM D784 | 1.4 |
Kinematic Viscosity
|
ASTM D445 ASTM D445 |
164 19.1 |
| Viscosity Index | ASTM D2270 | 133 |













