Royal Purple SAE High Performance Synthetic Motor Oil; 5W-20

Protect Your Investment. The most effective way of ensuring long engine life in either a heavily modded racecar or daily driven GMC Sierra is regular oil changes. There is no better oil available for your Truck than Royal Purple. Royal Purple is a full synthetic oil that contains a patented additive to reduce engine wear and protect your rings, cylinders, and bearings more than any other. It also sticks to your engine's internals after shutdown to protect your engine upon startup.

Superior Performance. Unlike other oils, Royal Purple continues protecting your engine even at high temperatures, making it a great choice for every Sierra. It lubricates better regardless of temperature, ensuring your Sierra will run right whether you're stuck in a traffic jam or going off-roading. Many Sierra owners even report better throttle response or even horsepower gains with Royal Purple.

Resists Breakdown. Royal Purple is more resistant to breakdown than other oils, meaning you can go longer on an oil change without worrying about engine damage.

Application. This Royal Purple Oil is a 5w20 weight. Check your Sierra's oil cap or owner's manual for the correct weight for your engine.

Please Note: If you are unsure how many quarts of oil you will need for a complete oil change, please refer to your vehicles owner manual or contact your local GMC dealer.

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