Just reading this over at the Infineum site:
"ILSAC delivered a letter to API stating the need for protection against Low Speed Pre Ignition (LSPI) for new engines being introduced into the market. Due to the delays to ILSAC GF-6, OEMs are requesting a supplement to the current API SN specification to include an LSPI test to deliver turbocharger protection. API LG agreed to accept and progress this request. While OEMs desire January 1 2018, this date has not been agreed by API LG. ACC and API Oil Marketers need to review the supplement description and timing required for the steps to deliver the API SN Plus supplement - with which ILSAC GF-5 can also be claimed."
"ILSAC delivered a letter to API stating the need for protection against Low Speed Pre Ignition (LSPI) for new engines being introduced into the market. Due to the delays to ILSAC GF-6, OEMs are requesting a supplement to the current API SN specification to include an LSPI test to deliver turbocharger protection. API LG agreed to accept and progress this request. While OEMs desire January 1 2018, this date has not been agreed by API LG. ACC and API Oil Marketers need to review the supplement description and timing required for the steps to deliver the API SN Plus supplement - with which ILSAC GF-5 can also be claimed."
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