Hello,
What is the main difference between API CJ-4/SN and API CJ-4/SN/SM ?
SN - its the most recent spec for oil. Can it be used in all gas engine, any year?
SN/SM - Why some oil are rated SN and SM ?
I want to used Amsoil API CJ-4/SN in a 2002 gaz engine ,should it be ok ?
thanks
What is the main difference between API CJ-4/SN and API CJ-4/SN/SM ?
SN - its the most recent spec for oil. Can it be used in all gas engine, any year?
SN/SM - Why some oil are rated SN and SM ?
I want to used Amsoil API CJ-4/SN in a 2002 gaz engine ,should it be ok ?
thanks