ACDelco High Performance Engine Oil

ACDelco High Performance Engine Oils are specially designed from mineral base stocks to deliver engine protection that meets all requirements of the API CF-4/SJ standards. ACDelco High Performance Engine Oil also meets the requirements for many diesel engines and provides engine cleanliness by helping to control thermal breakdown and deposit formation under normal driving conditions.


• Meets API CF-4/SJ energy-conserving performance standards to provide necessary automotive engine-wear protection for many makes and models.
• Designed for all heavy-duty diesel engines, truck, bus, tractor, pick up, fishing boat especially high speed diesel engine. It can also be used with gasoline engines at the API SJ performance.
• Premium mineral-based formula that protects against high temperature deposits, such as the formation of sludge and varnish deposits, for additional engine protection.
• Provides engine cleanliness by helping to control thermal breakdown and deposit formation under normal driving conditions.


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 your vehicle’s oil is very dark or thick.
• If the oil life monitoring system in your vehicle is approaching zero percent, or if you have driven more than the recommended kilometers in your owner’s manual.

• Black fluid leaking from the vehicle could be an engine oil leak.
• A heavy thick smell originating from under the hood or from the exhaust could be a sign of burning oil within the engine .


• Your motor oil must be changed regularly.
• Replacing dirty oil and filters will help protect the inside of your engine from premature wear.
• Use the recommended grade of oil for your vehicle as found within your owner’s manual.
• Follow either your vehicle’s oil-life monitoring system or your vehicle owner’s manual recommended oil change intervals.
• Check your dipstick at every fuel fill for oil levels and color. 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.


Q: Should I flush my engine before switching from conventional to synthetic or vice versa?
A: No, it is not necessary to flush your engine when switching between conventional and synthetic motor oils.

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

Q: Do I need a special oil filter for a synthetic oil?
A: 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.

Q: Does my vehicle require a specific amount of motor oil?
A: Yes, your vehicles owner’s manual will contain information containing to the oil specification and capacity for your engine.

Q: Is there a way to tell if my motor oil needs to be changed or is running low?
A: Yes. If equipped, your vehicle’s oil-life monitoring system will inform you when your motor oil needs to be changed, or, as a minimum, once every year. If your vehicle does not have an oil life monitoring system, change the oil per owner's manual guidelines. Periodically check your vehicle’s motor oil dipstick for your oil levels. For more information regarding vehicle specific oil life and appropriate oil levels, check your vehicles owner’s manual.

Q: Will using synthetic motor oil extend the change period as shown by the oil life monitor?
A: No, the oil life monitor is not impacted by the type of oil used, it is only influenced by the amount and type of driving. Synthetic oil will, however, improve the protection provided to the engine by the lubricant.