Best motor oil:

Got questions about motor oils? We have answers!

Motor oil to your engine is like water to your body - it's not burned as fuel, but all the key parts depend on it to work. And, like your body, your engine runs better when you treat it right.

Why should I do an oil change?

As your engine's parts rub against each other, they cause excessive friction and heat. This causes oil to break down so it can't protect your engine.

What happens when motor oils gets dirty?

When contaminants from polluted air or dirty fuel infect your motor oil, it loses its ability to lubricate your engine.

Does the age of motor oil make any difference?

You bet. As oil sits, it naturally begins to deteriorate and lose the qualities that make it essential to your engine.

What benefits do I get from an oil change?

The moving parts of your engine won't be subjected to excessive wear and tear. You'll experience increased engine life and performance, and you'll protect the warranty on your car.

According to the manufacturer, what's the best motor oil for my vehicle?

Check your owner's manual. Look for:

  • The SAE service rating
  • The SAE viscosity grad
  • Variations for extreme temperatures (SAE 5W-30, e.g.)
  • Oil capacity
  • Recommended time between an oil change
  • The oil that the manufacturer recommends

What are multi-grade motor oils?

Today most oils are multi-grade oils. 10W-30 and 20W-50 are common examples. They offer:

  • special additives, giving you the smooth flow of a light oil along with the high temperature protection of a heavier oil
  • the ability to operate in a much broader temperature range than single grade oils


What do ratings on motor oils mean?

The American Petroleum Institute assigns three different ratings to every bottle of motor oil. These ratings are visible on the "donut" symbol on the back of each oil bottle.

The "donut" of the seals on bottles of motor oils tells all:

  • The center of the seal indicates the oil's viscosity. Lower numbers are better for cooler climates, and higher numbers for warmer ones.
  • "SL" is the latest API service rating for gas engines; "SJ" is good for 2001 and older engines.
  • Oils carrying the "Energy Conserving" designation contain friction modifiers to improve fuel economy.
  • A "C" rating is for diesel engines. The most current API service rating for diesel engines is "CH-4."


What choices do I have in motor oils?

There are several choices, including:

SYNTHETIC OILS - more expensive, but provide the best protection for your engine. They resist extreme temperatures and provide even lubrication throughout engine components. Their added protection may save you money in repair costs down the road. Some cars require synthetic oil, so be sure to check your owner's manual.

SYNTHETIC BLENDS - a moderately priced compromise between strictly synthetic or petroleum-based oils. They provide increased protection for your vehicle for a marginal increase in price.

PETROLEUM BASED OILS - cost effective, and meet most manufacturers' basic requirements.

SPECIALTY OILS FOR SUVs OR HIGH MILEAGE CARS - formulated to handle the unique operating conditions of your vehicle; can provide better protection than other petroleum-based oils.

The right product makes all the difference. Get the best motor oil for your vehicle and extend its life!

For more information on how to use the products you've selected, be sure to stop
by the Consumer Education display in the front of your Advance Auto Parts store.

Looking for high quality auto parts on all of your vehicle maintenance jobs? Trust Advance Auto Parts!