According to the search results, the density of petrol can vary depending on the source. The density of petroleum is approximately 800 kg/m3, with a specific gravity of 0.8. However, the density range of petrol should be within the range of 720-775 kg/m3 according to the Bureau of Indian Standards (BIS) specification IS 2796. Another source states that the nominal density of gasoline is 0.7429 g/mL at 15°C. It is important to note that the density of petrol can affect its quality, and any change or variation in density could indicate an alteration in the petrol.