Pour Salt Down Your Drain At Night, Here's Why.

 

Gas Gauge Arrow

If you have a car, you should see a left or right arrow beside your gas gauge. It is there to tell you where the gas cap on the car is! 
You should already know where it is, but this is useful when you are driving a borrowed or rental car. 
This might not ring true if you have a car made before 2010, however.

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