There are many, way too many variables to answer this precisely, but in the case of a broken in Majesty (which in and of itself is debatable, I loosely propose 5k miles) a quality synthetic oil "can" and "should" in theory produce longer lasting protection so long as the oil is kept clean. High heat breaks oils down quicker and standard oils presumably start to falter before synthetics in controlled tests, but dirt/blow by/dust is still part of the equation, and that can have a negative effect on folks who run synthetics for double or more miles / time than standard oils, but fail to put new filters on. It really requires oil test sample analysis for your particular riding environment and style to predict which oil might best suit your scoot in terms of cost vs. protection.
In terms of sheer protection, clean oil vs. clean synth oil, probably not worth talking about in terms of difference.
I have never met anyone who can prove one is better than the other in all conditions and I go back and forth (different vehicles) all the time. For my $$ I mostly stick to name brand standard oils and keep the 3k change interval as the target.
Another thing to keep in mind is the Majesty does not run a clutch and transmission in the motor oil. It has separate oil and therefore does not require motorcycle specific blends. So, in theory, using Castrol auto oil, for example, should work just fine, whether you choose synthetics or not.
The next discussion might be the oil viscosity preferences for the Majesty 400 ... 10w40 for better efficiency or 20w50 for more protection ???
In terms of sheer protection, clean oil vs. clean synth oil, probably not worth talking about in terms of difference.
I have never met anyone who can prove one is better than the other in all conditions and I go back and forth (different vehicles) all the time. For my $$ I mostly stick to name brand standard oils and keep the 3k change interval as the target.
Another thing to keep in mind is the Majesty does not run a clutch and transmission in the motor oil. It has separate oil and therefore does not require motorcycle specific blends. So, in theory, using Castrol auto oil, for example, should work just fine, whether you choose synthetics or not.
The next discussion might be the oil viscosity preferences for the Majesty 400 ... 10w40 for better efficiency or 20w50 for more protection ???