I know what CF is.. let me share an example.
theres a shell API SN/CF and also a shell API SN - why the differentiation? if we are buying it for a gasoline engine application. Why even mention the CF performance if it doesnt matter?
next i was also asking about the sequence - one product...
A lubricant with a label API SN/CF vs API SN - Whats the difference?
Similarly - why are some CF/SF and SF/CF - which comes first? Is there a difference in performance?
I know the API performance levels - just the combinations are tricky to me
