What is the best motor oil for the 250ex?
I am not going to say one oil is better than another, because I know someone will get their panties in a wad about it. I’ve ran GN4, Amsoil synthetic, and ELF synthetic, and i found ELF to be the best bang for the buck motor oil thus far. Amsoil might be marginally better, but the difference between the two was negligible at best and the ELF was 25% cheaper. Synthetic is always better than conventional oil. Shell Rotella oil in both synthetic and non-synthetic form is another great oil for not much money. Please be aware that synthetics with friction modifiers will make your clutch slip.
