Online calculator which helps you to know the payback time of gas equipment for cars.
If your car runs on petrol consumption of 10 litres or more on 100 km of run or your daily mileage of more than 100 km, then you will certainly be profitable to install gas equipment for your car.
Installation of equipment saves your money provided that your daily mileage of more than 100 km, gas-propane more environmentally friendly fuel than gasoline, and the engine that runs on gas is less susceptible to wear than the engine on gasoline.
The main question is put or not, then the answer is obvious - if the daily mileage of your car is big then of course you need to install this equipment.