I have a semi automatic motorcycle, an underbone. A chinese one specifically and the manual recommends to have it an API SE engine oil. Can I use API SN? I’ve read somewhere that these API SN would be bad for my engine in the long run as there is less zinc or something.
whats the highest api rating can i go with my recommended oil which is api se/sd? is SL the highest? i’m trying to save money by buying the cheapest oil in the market with proper oil intervals,.