Gas and oil

Maybe you have a car that gets 30 miles per gallon, and you change the oil every 3000 miles.

Would it be better if you started changing your oil every 300 miles?

Probably not.

Gasoline is like using money. Oil is like using credit. We need oil in the engine, and we need to use credit. But using more than we need only costs us money.

What the car needs is enough gasoline, what the economy needs is enough money, to get us where we want to go. And enough oil to keep us going, but not more than we need.