The New API Motor Oil Specification
API SN Plus is a new motor oil specification developed for turbocharged engines that was developed in response to automobile manufacturer requests for a motor oil that protects against low-speed and pre-ignition (LSPI). LSPI is an engine issue present in turbocharged gasoline direct injection engines, and can be alleviated by changing the motor oil formulation.
What is Low Speed Pre-Ignition (LSPI)
LSPI is an unusual combustion incident at low…READ ARTICLE