09-02-18, 11:19 PM
Recently switched to fully synthetic for no other reason than the bike is a keeper and anything I can do to prolong the life of the engine is worth paying for including a new filter with each oil change. Semi synthetic is more than fit for purpose though. I would consider your mileage and timescales between oil changes into your purchasing decision as you don't need top of the range oil if Like Rob R you are regular with the changes, if you CBA to keep on top of it then a higher quality oil or fully synthetic would be a better choice. Definitely bike specific oil unless you've done your research.