We have said this in the past, and we will say it again – the best upgrade one can give one’s motorcycle, especially if it runs on mineral oil, is a healthy and repeated dose of synthetic engine oil. The same holds true for motorcycles that run on semi-synthetic oil, especially if these put out a handsome supply of power.
Okay, now the Royal Enfield Interceptor 650 isn’t exactly fantastic when it comes to power-to-weight or specific output figures; it weighs over 200kg but develops under 50 horsepower. But, it still has a reasonably large engine, and a relatively difficult task of dealing with high ambient temperatures, and constant stop and start riding.
And though we agree it already has a refined engine and no real heat-related issues, we believe switching from semi-synthetic to synthetic engine oil will nonetheless bring in some benefit.