Looking for anyone with some first hand experience. I searched and didn't really find what I was looking for and I don't want to turn this into an oil thread. I've been riding for 20 years but this is my first new 4 stroke. Vet b speed, mx on sand tracks.
Question is, I rode the bike for the first hour at the track at about 50-70%. Shifting, engine braking, putting a load on the engine, no rev limiter...all that good stuff. Came home dumped the oil and filter and changed to 15/40 rotella. Dealer hooked me up with some synthetic motorex but said to run Dino for first 8 hrs. I'm cool with that but all they had was 10/40.
So I'm at 3 hrs now and about to change oil for the second time and am assuming break in is about complete and want to ride at 100%. Is the 10/40 or 15/40 rotella ok to run for high load sand track ( I'm not a rev limiter rider). I know the manual specs 10/50 or 10/60 and is it still too early to run the motorex? I've read a bunch of break in stuff but it's all over the place any input is appreciated.