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Zeith Emerald Ultimate 15W40 API SN

Zeith Emerald Ultimate 15W40 API SN

Zeith Emerald Ultimate 15W40 API SN

Zeith Emerald Ultimate SN/CF series is designed with semi-synthetic base stocks and advanced technology additive system to provide very high level of engine protection and performance. It is suitable for higher mileage gasoline fueled automobiles and light duty trucks requiring an API SN/CF specification, where very high viscosity index oils are preferred to provide longer oil drain intervals in modern engines and better oil consumption control in older vehicles where oil usage (burning) is an issue.      

Features & Benefits:

  • Improved fuel economy & easy cold start due to good fluidity at low temperatures.
  • High-resistant oil film even at high engine operating temperatures.
  • Excellent detergency and dispersancy, reduce sludge formation which improves engine cleanliness.
  • Excellent oxidation & thermal stability helps in extending oil drain intervals.
  • Superior wear protection for greater engine reliability and performance.


Zeith Emerald Ultimate series is suitable for use in GM, Ford, BMW, VW, Audi and Mercedes Benz.

  • Automotive gasoline and diesel engines.
  • Passenger cars, SUVs, light trucks and vans.
  • Moderate-duty LPG vehicles.
  • Suitable for all petrol engines with multi-valve & turbo types and with or without catalytic converter.
  • Naturally aspirated or turbo-charged diesel engines in cars and light vans.
  • Fuel-injected or indirect injection diesel engines fitted with blow-by recirculation systems.


Specifications Zeith Emerald Ultimate meets or exceeds the following International and Builder specifications:

  • API SN, SM, SL, SJ, CF
  • ILSAC GF-4
  • ACEA A3/B3, A3/B4

Typical Characteristics

Zeith Emerald UltimateTest MethodUnits15W-4015W-50
Density @ 15 0CASTM D 4052gm/cc0.8780.865
Viscosity @ 100 0CASTM D 445cSt14.3018.5
Viscosity @ 40 0CASTM D 445cSt100129
Viscosity IndexASTM D 2270147162
Pour PointASTM D 97°C-33-42
Flash Point (COC)ASTM D 92°C230230
Total Base NumberASTM D 2896mg KOH/g8.28.2
PhosphorousASTM D 4951%wt0.10.1
CCS ViscosityASTM D 5293cP5600 @ -20 °C5800 @ -20 °C

The above figures are typical of blends with normal production tolerance and do not constitute a specification.