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ACDelco Dexos1 Full Synthetic Motor Oil

Motor Oil: Synthetic Motor Oil Dexos1 | ACDelco

ACDelco dexos1 Full Synthetic Motor Oils are formulated with high performance base stocks and excellent additive technology to help provide protection for today’s modern engines. They are licensed to the dexos1 engine oil specification, which is the General Motors’ OEM engine oil specification. These motor oils are formulated to help with pre-ignition protection as well as turbocharger oxidation and deposit protection. They are the ideal high quality motor oil for many vehicles on the road today and are manufactured to meet your expectations for quality and function.


  • Provides exceptional low-temperature fluidity to help reduce friction and wear at cold-weather engine start-up.
  • Licensed to ILSAC GF-5 specification.
  • Meets API SN Resource Conserving Service Classification.
  • Premium chemical product for vehicle maintenance.
  • Provides the performance and dependability you expect from ACDelco.

Good Maintenance Practices:

  • Your motor oil must be changed regularly.
  • Replacing dirty oil and filters can help protect the inside of your engine from premature wear.
  • Use the recommended grade of oil for your vehicle as found in your Owner’s Manual.
  • Follow either your vehicle’s Oil Life Monitoring System or your vehicle Owner’s Manual recommended oil change intervals.
  • Periodically check your dipstick for oil levels. For the most accurate reading, wait a few minutes after turning off the engine to give the oil time to drain from the crankcase into the oil pan.


Signs of Wear & Troubleshooting:

An oil change for your vehicle might be necessary:

  • If your vehicle’s oil level is low.
  • If there are unusual noises from under the hood.
  • If the Oil Life Monitoring System in your vehicle lights up or informs you that your oil is running low, etc., or if you have driven more than the recommended miles in your Owner’s Manual.


  • Black fluid leaking from the vehicle could be a motor oil leak. All leaks should be checked.
  • A heavy thick smell originating from under the hood or from the exhaust could be a sign of burning oil within the vehicle.



Should I flush my engine before switching from conventional to synthetic or vice versa?

  • No. Engine oil system flushes are not recommended and could cause engine damage.

Is it true that new engines need break-in periods using conventional motor oil?

  • No, it is not true that new engines need a break-in period using conventional motor oil. New engines can be run with conventional or synthetic motor oils while still properly breaking in the engine components.

Do I need a special oil filter for a synthetic oil?

  • No, you do not need to use a special filter for synthetic motor oil. The type of oil filter used isn’t necessarily based on the type of oil, but rather on vehicle specifications. Always use the quality of filter that meets the specifications denoted in your owner’s manual.

Does my vehicle require a specific amount of motor oil?

  • Yes, your vehicles owner’s manual will contain information pertaining to the oil specification and capacity for your engine.

Is there a way to tell if my motor oil needs to be changed or is running low?

  • Yes, you should periodically check your vehicle’s motor oil dipstick for your oil levels. If your vehicle does not have an oil life monitoring system, change the oil per owner's manual guidelines. If equipped, your vehicle’s oil-life monitoring system will inform you when your motor oil needs to be changed, or, at a minimum, once every year. For more information regarding vehicle specific oil life and appropriate oil levels, check your vehicles owner’s manual.

Will using synthetic motor oil extend the change period as shown by the oil life monitor?

  • No. The oil life monitor is impacted by factors such as engine revolutions, engine temperature, and miles driven.


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