No need to mix messy gas and oil together.

This may not be mixing oil and water but, based on the traditional definitions of growth and value, it's pretty close.

Take the extra three minutes to mix good olive oil, vinegar, a bit of fresh pepper and salt.

People who mix old and new oil or just keep topping it up are sacrificing the good oil for the bad.

It's like trying to mix oil with water.

Specimen application for approval to mix oil in pipeline

With this model, you will not need to mix oil in the fuel.

"You had to be a little crazy to mix oil with gas."

In a small bowl, mix the beaten eggs, garlic, olive oil and vanilla extract.

Don't try to mix oil and water in patrolling the peace.