BS VI Passenger Vehicles

Passenger vehicles vary based on the type of fuel the vehicle is run on.

Diesel Passenger Vehicles

To achieve BS VI emission norms on these vehicles, vehicle manufacturers have adopted an approach similar to that of commercial vehicles—i.e. having Diesel Particulate Filter (DPF), Selective Catalytic Reduction (SCR) and Diesel Oxidation Catalyst (DOC) as exhaust after-treatment devices.

Lubricant Solution: Since BS VI-complaint diesel-powered passenger vehicles have DPF fitted to the exhaust, they require lower Sulfated Ash, Phosphorus and Sulfur (SAPS) engine oils. Since the operating conditions of passenger vehicles are different to that of heavy-duty commercial vehicles, the industry has adopted European Automobile Manufacturers’ Association (ACEA) specifications for diesel-powered passenger vehicles. Hence, for BS VI-complaint diesel-powered passenger vehicles, engine oils meeting ACEA C type (ACEA C2, C5 and C3) specification are an appropriate base line where C stands for “Catalyst compatible.”


Petrol- / Gasoline-Powered Passenger Vehicles

Petrol- / gasoline-powered vehicles burn relatively cleaner than diesel so to achieve BS VI emission norms on these vehicles, the vehicle manufacturers have made changes in some petrol engines such as introducing turbo charging and changing the fuel injection type. With regards to exhaust after-treatment, there aren’t any signification changes required and the current three-way catalyst is enough to meet the tighter emission norms

CNG Passenger Vehicles

Compressed natural gas (CNG) is inherently a clean fuel so there is no specific hardware change for passenger vehicles running on CNG fuel.

Lubricant Solution: In the case of petrol- / gasoline-powered passenger vehicles having conventional fuel injection, engine oils having API SN specification are sufficient for catalyst protection.

For vehicles with Turbo-charged gasoline direct injection (TGDI) or Gasoline direct injection (GDI) engines, the recommended specification is API SN PLUS or API SP.

For passenger vehicles that run on CNG fuel, oils recommended for BS VI petrol- / gasoline-powered vehicles are compatible. The only major difference is that CNG oils are typically higher viscosity oils.

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