Is synthetic oil “fake” oil?

Synthetic oils are not fake – they are still derived from crude. However, synthetic oils use higher base-stocks than conventional oils. Synthetic oils also go through a different process than conventional oils for extra wear protection and overall higher shear strengths.

Do synthetic oils create more sludge?

No. Valvoline synthetics are higher in detergents to help clean an engine and reduce the risk of sludge.

Is bulk oil a lower quality oil than packaged oil?

No. Bulk oil is the exact same oil that is bottled and sold in retail locations.

Is thicker oil better oil?

Thicker oil can be better for older engines in which engine parts have worn over the years. However, it is generally recommended to always stick with the viscosity recommended by the manufacturer of the particular engine.

Does motor oil have an expiration date? How long is it generally good for?

Valvoline motor oil does not have a documented expiration date. Under optimal conditions, the product is stable for an extended period of time and can be used as long as the American Petroleum Institute (API) rating on the label continues to meet or exceed the requirements listed in your owner’s manual. If the rating is still current, shake the container before use to blend any additives that may have settled.

Is switching between conventional and other types of motor oil bad for my engine?

Conventional, synthetic, synthetic blend, and high mileage motor oils are compatible. Mixing or switching between types of motor oil is not harmful to your engine.

What does the W stand for in 10w 30 motor oil?

The W actually stands for winter.

Will using (brand x oil) void my manufacturer’s warranty?

Using a brand of oil that is different from your vehicle manufacturer’s factory fill will not void the warranty. Just make sure that the oil meets the manufacturer’s standards for use in the particular vehicle.

Will use of Power Service diesel additives void my manufacturer’s warranty?

No, when used as directed on the container label, use of Power Service diesel additives will not void any engine manufacturer’s warranty.

Do Power Service diesel additives contain alcohol?

The only product manufactured by Power Service that contains the type of non-harmful alcohols recommended by engine manufacturers for removal of water is Power Service Diesel 911Diesel 911, as its name implies, is used to solve the fuel emergencies diesel engine operators most commonly encounter.  In winter,Diesel 911 re-liquefies gelled fuel and de-ices frozen fuel-filters in a matter of minutes, eliminating the need for a tow truck.  Diesel 911 also removes water fom the fuel system to prevent icing problems and extend the life of fuel filters, fuel injection pumps and fuel injectors.