Regular oil changes are one of the most important things that can be done to help extend the life of an engine. 

Changing your oil will remove harmful contaminants and dirt that have been collected in the oil.

Some of the motor oil components are consumed sacrificially while doing the job of protecting your engine.  Foreign contaminants also accumulate in the oil.

Premium quality motor oil is designed to keep the engine clean and protected over the life of the oil drain interval.

The correct oil change interval is the one recommended by the engine manufacturer for your individual driving conditions.It is printed in the vehicle owner’s manual.

Each vehicle manufacturer tests its own vehicles to determine the proper drain interval.

Severe use typically includes stop-and-go driving, frequent high-speed driving and short trips. 

Towing, operating in dusty conditions and operating in cold and hot weather are also typically considered severe service.

You should review the severe service definition in your owner’s manual to determine the proper oil drain interval.

Note: Full synthetic oils should not be used in Mazda Rotary engines, which have unique and specific lubrication requirements.

Synthetic oils are typically formulated with the requirements of the auto manufacturers in mind, and so if used in accordance with the owner’s manual, synthetic oils will not void warranties.

Note: Full synthetic oils and synthetic blend oils should not be used in certain Mazda Rotary engines, per their owner’s manual.

Synthetic oils are formulated to be fully compatible with engine seals in an engine of any age.

Switching between synthetic and conventional oil will not cause any harm to engines as long as both individual oils meet the engine manufacturer’s requirements as listed in the owner’s manual. 

Properly functioning motor oils lubricate, clean, cool, seal and perform other functions in an engine.

Properly functioning motor oils may also help enhance fuel economy, prevent sludge and varnish deposits and maintain the ability to flow in low temperatures.

Additive packages play a key role in helping to keep an engine clean and protected from varnish and sludge, as well as provide wear protection and protection from heat and acids. 

Additives can consist of anti-wear agents, friction modifiers, dispersants, detergents, viscosity index improvers and antioxidants. 

Always check the vehicle’s owner’s manual; it is best to stay with the viscosity recommended by the manufacturer of the engine.

It stands for winter, not weight as many people believe.

No. Just be sure that the oil meets the manufacturer's requirements for use in your engine.

For many vehicles, look for the American Petroleum Institute’s
(API) Starburst on the bottle.  For every vehicle, always make sure the oil meets the manufacturer’s requirements as listed in the owner’s manual.

The API Service Symbol (“Donut”) and API Certification Mark (“Starburst”) identifies quality engine oils for many gasoline- and diesel-powered vehicles.

Oils displaying the Starburst meet performance requirements set by many U.S. and international vehicle and engine manufacturers and the lubricant industry.

The oil meets the current engine protection standard and fuel economy requirements of the International Lubricant Standardization and Approval Committee (ILSAC), a joint effort of U.S. and Japanese automobile manufacturers.

Many automobile manufacturers recommend oils that carry the API Certification Mark (“Starburst”).