How can petroleum be conserved or recycled?

Petroleum is a non-renewable resource which means that once it is used up it cannot be replaced or used again. So it cannot be recycled, but it can be conserved and saved.

There are various methods which can be taken against the exhaustion of petroleum:

1. reducing the usage of private transportation ..and prefer public transportation

2. using petroleum in limit not excessively

3. don't let your engine idle when you have stopped your car

4. while driving minimize the use of breaks

5. don't be a fan of Michael schumacher .. drive your car at a constant speed

You can add more to the list.