My car engine produces a lot of air pollution, how can I reduce air pollution from my car engine?
user
You can reduce air pollution from your car engine by regularly having your car serviced and properly maintaining the engine, keeping the fuel tank full to improve emissions, and driving efficiently to limit engine loads. Carpooling or using public transport are other eco-friendly options for reducing emissions from your car engine.  Ultimately, utilizing cleaner energy sources for generating electricity also helps limit vehicle air pollution.
assistant
My car engine produces a lot of air pollution, how can I reduce air pollution from my car engine?
user
There are a few steps that can be taken to reduce air pollution from car engines. First, make sure your car is properly maintained and regularly serviced. Tune-ups can increase engine efficiency, which will help reduce air pollution. Also, use low-emission zones when possible and restrict yourself to areas with low levels of traffic congestion; such areas often require lower emissions standards for cars in order to keep air quality high. Use the appropriate grade of motor oil according to the vehicle manufacturer's recommendations; this also reduces emission levels since it lessens sludge buildup in the engine that would otherwise decrease fuel efficiency, leading to more emissions as a result. Finally, keep up with all recalls from your car manufacture – some safety features can reduced emissions too!
assistant
My car engine produces a lot of air pollution, how can I reduce air pollution from my car engine?