Introduced in October 2010 API (American Petroleum Institute) SN
specification was specifically developed to improve high temperature
deposit protection for pistons, more stringent sludge control, and seal
compatibility within older engines.
Introduced in October 2010 API (American Petroleum Institute) SN
specification was specifically developed to improve high temperature
deposit protection for pistons, more stringent sludge control, and seal
compatibility within older engines.