2025 rocket 3 prolonged occasional starting.

Seems mine also has to have oil added to it occasionally. I only have about 3500k miles on it and have done two oil changes so far. I put my bike in the shop for the starting issue and they couldn't get it to do it and ever since I got it back it only did it 1 time, then never again which is odd.

Maybe because the shop tried starting it a million times it somehow cured it, who knows. The oil dissapearing is kind of annoying and I was diligent with the break in procedure. I have heard to really slow leaks developing behind the starter cover but I have never looked.
 
The o rings in the gear position sensor are a common cause of leaks- not enough to drip under the bike, but while it's running and it blows on the engine where it burns off slowly. It's super easy to check with a 10mm socket.

 
sounds like a failing starter solenoid.

had this issue already two times - i´m not a "sunny wheather only"-rider..

first time the issue came after 4 years / 55k km.. sometimes the rocket needed a 2nd (3rd, 4th..) push to start the engine, solenoid click was not noticable first..

last year october i had a starter solenoid failure without announcment.. failed "instantly" .. last day i came home, next morning starter dead.

this part is not expensive, but a little bit tricky to replace, sits under the battery, towards gas tank, on the bottom of the plastic pan.

Part number is: T1310008

this part is in several triumphs.. so don´t worry to buy one, which comes from Street Triple 765 S or so..