Dexos® R ushers in a new motor-oil standard for high-performance engines

AMSOIL is already in front of it.

Introducing GM Dexos® R, the groundbreaking motor oil standard set to transform high-performance engine protection. As vehicles evolve, advanced engines require motor oil capable of meeting their demands. AMSOIL, a synthetic lubricants pioneer, is already ahead with its Signature Series. Dexos® R ushers in a new motor-oil standard for high-performance engines. AMSOIL is already in front of it.

Understanding Dexos® R Specification:

Specifically designed for 0W-40 and 5W-50 motor oils, Dexos® R is perfect for high-speed, high-load conditions. This specification not only provides enhanced wear protection but also ensures temperature stability for high-performance engines.

AMSOIL Signature Series Exceeds Expectations:

After extensive testing, AMSOIL Signature Series surpasses the Dexos® R standard. By skillfully combining top-notch synthetic base oils and cutting-edge additives, AMSOIL Signature Series 0W-40 and 5W-50 offer exceptional wear protection, temperature stability, and fuel efficiency.

Dexos® R vs Dexos® 1 Gen 3: Key Differences

Feature / Focus	Dexos® 1 Gen 3 (Gasoline)	Dexos® R (High-Performance)
Primary Use Case	Daily commuting, general duty	High-performance / track-adjacent use
Typical Grades	0W-20, 5W-30	0W-40, 5W-50
Wear Protection Emphasis	Meets modern baseline	Elevated for high-temp / high-load
Shear Stability	Standard	Higher for wide-span multigrades
Thermal / Oxidation Resistance	Strong	Stronger under sustained heat

If your owner’s manual specifies Dexos® R, always choose an oil that meets or exceeds this spec.

Dexos® R Icon on AMSOIL Packaging:

The Dexos® R icon will be added to AMSOIL Signature Series 0W-40 and 5W-50 packaging as a rolling change in 2023, signifying compliance with the new standard. Customers can trust the certified product’s performance.

The Dexos® R specification sets a new bar for high-performance engine protection. AMSOIL Signature Series 0W-40 and 5W-50 already exceed this standard, delivering unparalleled engine protection and performance. Look for the Dexos® R icon on AMSOIL Signature Series packages and experience the difference in your high-performance vehicle.

*All trademarked names and images are the property of their respective marks in some countries. No affiliation or endorsement claim, expressed or implied, is made by their use.

Frequently Asked Questions

Frequently Asked Questions

What is GM Dexos® R specification?

Dexos® R is GM's premium motor oil standard specifically designed for high-performance engines. It requires enhanced wear protection, temperature stability, and performance under high-speed, high-load conditions. Only 0W-40 and 5W-50 viscosity grades meet this specification.

Which AMSOIL products meet Dexos® R requirements?

AMSOIL Signature Series 0W-40 (AZF) and 5W-50 (AMR) both exceed GM Dexos® R requirements. These products feature the Dexos® R approval icon on their packaging and provide superior protection for high-performance engines.

Why is Dexos® R better than regular motor oil specifications?

Dexos® R sets higher standards for wear protection, oxidation resistance, and temperature stability compared to standard motor oils. It's specifically engineered for high-performance applications where engines operate under extreme conditions.

Can I use Dexos® R oil in any GM vehicle?

While Dexos® R oils can be used in any GM vehicle, they're specifically formulated for high-performance applications. For most GM vehicles, Dexos1® Gen 3 specification oils like AMSOIL OE or XL are more appropriate and cost-effective.

What vehicles require Dexos® R?

Dexos® R is typically required for GM high-performance platforms like Corvette, Camaro ZL1, and Cadillac V-Series. Always confirm in the owner's manual or product lookup guide.

Is Dexos® R backward compatible with Dexos® 1 Gen 3?

No. Dexos® R and Dexos® 1 Gen 3 are separate GM specifications. If your manual calls for Dexos® R, do not substitute Dexos® 1 Gen 3.

How does Dexos® R compare to Mobil 1 or other brands?

Dexos® R defines a baseline standard. AMSOIL Signature Series 0W-40 and 5W-50 exceed the Dexos® R spec, offering superior wear protection and thermal stability.

AMSOIL Signature Series Products for Dexos® R

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