I'm sure this question has been asked before so forgive me as I have very little oil knowledge. I am coming up to the 1600 km (Canada) first service and I bought the life time oil change form HD Dealer. This includes the regular non synthetic oil and I can have it changed as frequently as 4000km (2500 miles). I can pay the extra for the synthetic but should I bother since I can have the oil changed so often anyway. What are the other benefits to synthetic other than it lasts longer?
Nope I'm not aware of this ever coming up.....
First things first. How many changes are considered a "lifetime"? Service packages are sold here for yearly intervals, but they only allow for two changes a year.
Even with regular oil, there's no need to change more frequently than the factory-recommended 5,000 miles. Your warranty will be intact, you'll spend less time at the dealer getting changes, and your bike will be fine.
The advantages to synthetic are that (as Skratch said) it's more stable at high temperatures, and also that it has better cold-flow capabilities.
Finally, how many miles a year do you ride, and how many years do you plan on keeping this bike? If you ride 3,000 miles a year and plan on trading in/up in 3 years, there's no point at all in synthetic, as you'll never see the benefits.