Get Oil change in Denver | Value Package on Oil Changes

You should change the oil at least as often as is recommended by the manufacturer in your owner's manual. Many newer vehicles will say every 7,500 to 10,000 miles. However most auto mechanics recommend doing it more often, such as every 5,000 to 6,000 miles, or every six months, whichever comes first.
But you should take into consideration if you drive in these extreme operating conditions:

A lot of short trips
Stop-and-go driving
Limited highway driving
Driving in dusty conditions or on dirt roads
Driving in very hot weather
Towing and/or hauling heavy loads
In these types of driving conditions it may extend the life of the engine if it's changed every 3000 miles.

As an engine runs the oil serves to lubricate the moving parts. Overtime the engine gradually eats up the oil. If it's old, probably isn't lubricating as effectively. When the oil is not effectively lubricating, the engine is going to use more oil to keep it running smoothly.

If you see the level getting extremely low, don't just fill it back up. First check the color and consistency. It may be time to have the old oil drained and filled with new oil.