500 miles....... more than an oil change.
There is quite a bit more than an oil change at 500 miles......
A good reputable dealer will:
Engine, check for leaks.
Engine oil, renew.
Engine oil filter, renew.
Engine ECM, check for stored DTC (trouble codes).
Throttle cables, check and adjust.
Cooling system check for leaks.
Coolant level, check and adjust.
Fuel system, check forleaks.
Lights instruments, electrical systems, check.
Steering, check for free operation
Headstock bearings, check & adjust.
Forks, check for leaks and smooth operation.
Brake fluid levels, check.
Brake pad wear, check.
Brake calipers, check for leaks and seizures.
Brake master cylinders, check for leaks.
Final drive, check for oil leaks.
Final drive oil, check.
Fastners, inspect for security.
Wheels, inspect for damage.
Tire wear, Tire damage, check.
Tire pressure, check, adjust.
Clutch cable, check, adjust.
Sidestand, check operation.
The dealer actually has a checkoff list that has to be completed and submitted to Triumph with the serial number of the unit. When my dealer did my 500 mile service, I went over the bike when I got it home to see if they (dealer) actually did the items on the checkoff and they did. I also had an intermittent stalling problem which was traced to unbalanced throttle plates and fixed (at least it disappeared after the 500 mile service).
I know, a lot of that can be done by the owner, but the first service on anything, be it a bike, car, snowmobile or whatever, in my opinion, should be done by the selling dealer for if nothing else, peace of mind.
I use Amsoil 20-50 in my T100, but after reading about Triumph's faith in Mobil Racing 4T, I'm going back to that in the T100 also.