Licensed manufacturers produce engine oil meeting General Motors’ Dexos specification. This specification outlines stringent quality standards designed for specific engine types and performance requirements, encompassing viscosity grades, additive packages, and overall performance characteristics. For instance, a Dexos-approved 5W-30 oil will differ significantly from a conventionally formulated 5W-30 oil in terms of its chemical composition and ability to protect modern engines.
Utilizing oil formulated to this standard provides several key advantages, including enhanced engine protection, improved fuel economy, and reduced emissions. Historically, automakers relied on industry-standard specifications, but the increasing complexity of modern engines led to the development of proprietary specifications like Dexos to ensure optimal performance and longevity. This shift reflects the automotive industry’s ongoing focus on maximizing engine efficiency and reducing environmental impact.
