Global governmental vehicle regulations call for improved fuel efficiency and reduced greenhouse gas (GHG) emissionsMobile sources - Pollutant exhaust gases created by the combustion of fuel. Water and CO2 are not included in this category, but CO, NOx, and hydrocarbons are and are thus subject to legislative control. All three are emitted by gasoline engines, while diesel engines also emit particulates that are regulated. Stationary sources - The release of sulfur oxides and particulates from power stations that can be influenced by fuel composition. Local authorities control the sulfur content of heavy fuel oils used in such applications.. One of the ways to achieve these is through the use of lower high temperature high shear (HTHSHigh Temperature High Shear. A measure of a fluid’s resistance to flow under conditions resembling highly-loaded journal bearings in fired internal combustion engines, typically 1 million s–1 at 150°C.) viscosityA measure of a fluid's resistance to flow. A fluid with a higher viscosity flows less easily. engine lubricants, alongside more modern engine design.
In this video, we look at the impact of HTHS viscosity on the following:
- APIAmerican Petroleum Institute. The primary oil and natural gas trade association in the United States. API operates a voluntary licensing and certification program that allows engine oil marketers to use the API Engine Oil Quality Marks if their products meet specific requirements. CK-4, API FA-4 and MB 228.61 specifications
- Fuel savings
- Testing procedures
Related Articles:
- Viscosity Grade v. HTHS Viscosity: What’s the Difference and Why is it Important?
- Why HTHS Viscosity Matters
- Why are Low HTHS Viscosity Specifications Being Introduced?
- How is HTHS Viscosity Measured?
- Efficiency Benefits from Durable and Efficient Engine Lubricants
For more information on HTHS viscosity, please contact your Lubrizol representative.
