Using the improper viscosity or failing to meet the factory specifications can lead to increased wear, noise, and even long-term damage to the sophisticated engine internals. The "20" refers to the high-temperature viscosity, measured at 100°C.
2011 Acura TSX Oil Type Standard: Understanding the Factory Viscosity and Specifications
4-liter inline-four engine was designed to work optimally with a specific weight and chemistry to ensure proper lubrication and fuel economy. Factory Specifications and Recommended Viscosity Honda, the engineering parent of Acura, was very specific about the requirements for the 2011 TSX.
API Service Standards and Additives Beyond the viscosity, the chemical composition of the oil must meet specific performance standards to ensure compatibility with the emissions controls and precision components of the TSX. It also meets the friction modifier requirements of the continuously variable transmission (CVT), which relies on the precise chemistry of the fluid to function smoothly without slipping.
2011 Acura TSX Oil Type Standard: Understanding the Right Viscosity and API Requirements
It offers superior protection in both hot and cold environments, maintains its viscosity longer between changes, and helps keep the engine clean by suspending contaminants. The oil should meet the API SN (or later) service rating, which guarantees it contains the necessary detergents and dispersants to keep the engine clean.
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