Hi Everbody.
I've recently got a CBR600 F3.
I need to change the oil.
I can see it's 10/40 but do you use semi or fully synthetic, or either ?
Thanks
Phil

 

Religion, politics and oil preferences are 3 topics to avoid on this forum, especially that last one.

Actually whatever you prefer is the answer as long as it is specifically made for motorcycles and is the proper grade.