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Automakers Request API to Develop SP Supplement

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Sept. 3, 2021—Several automakers requested the lubricants group of the American Petroleum Institute to add a supplement to the API SP specification.

The letter, sent on Aug. 18 by Ford, GM, Stellantis and Toyota, requested an aged oil test for protection against low-speed pre-ignition in turbocharged gasoline direct injection engines, according to a report from Lubes 'n' Greases.

“We request that the supplement include all the performance requirements presently in API SP plus the requirements of meeting the limits set for the aged oil LSPI performance of a lubricant,” said Ford Motor Co.'s Michael Deegan, chairman of the International Lubricants Standardization and Advisory Committee.

The letter said studies have shown the potential for damage from low-speed pre-ignition increases as engine oils age. 



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