ILSAC GF-6A Fuel Economy Challenges
Published April 18, 2013
The fuel economy increase requested in the proposed International Lubricants Standardization and Approval Committee. A collaboration between the American Automobile Manufacturers Association (AAMA), Chrysler, Ford, GM, and the Japanese Automotive Standards Organization. ILSAC GF- engine oil specifications target fuel economy, emission system protection, and enhanced engine oil robustness. GF-6A specifications represent a significant increase over past GF engine oil categories. At the same time as ILSAC is requesting a fuel economy increase, OEMs are also introducing new engine technology, such as direct injection that, in some cases, includes turbo-charging (GDI-T). GDI-T engine technology brings new challenges of protecting the engine from chain wear and Uncontrolled combustion that takes place in the combustion chamber prior to spark in gasoline direct injection (GDI) engines. Also known as LSPI. (Low-Speed Pre-Ignition. Uncontrolled combustion that takes place in the combustion chamber prior to spark in gasoline direct injection (GDI) engines.). Balancing fuel economy, LSPI, chain wear, piston deposits, A thick, dark residue, normally of mayonnaise consistency, that accumulates on nonmoving engine interior surfaces. Generally removable by wiping unless baked to a carbonaceous consistency, its formation is associated with insolubles overloading of the lubricant. control and valve train wear will be a significant challenge for engine oil formulators.
New GF-6A formulations will be complex with multiple new engine test parameters to be passed. This will require very careful balancing of the additive, A measure of a fluid's resistance to flow. A fluid with a higher viscosity flows less easily. modifiers and base oils to meet the performance goals requested by the OEMs.