ChanceCoats123
Junior Member
On a stock bike (or any vehicle for that matter), I think you're 100% correct. If you've got engine work done, increased compression ratio, advanced timing, any number of things, then you'll definitely notice. This doesn't apply to many people, however.I think placebo has alot to do with it, additional detergents aside. I bet if you were given regular once or twice unknowingly you probably wouldn't notice. You may be more critical of noise/feel when riding with anything other than "top shelf". Ya know?