Thank youGoing to disagree with you massively over them needing A LOT of oil changes.
Unless you are doing them according to the factory manual which is set assuming it’s being raced(and KTM/HQ covering their arse) Which on TET/green laning if isn’t.
You can easily double or triple the change frequency - remember you aren’t on the limiter constantly like a race bike so the engine is miles away from the stress points.
My EXC-f 500 has nearly 400 hrs(of which I’ve added 300+) and it’s changed between 20-30 depending on conditions/distamces/type of ride.
Oil has always been clean and free of anything.
I am gonna stretch it to 20-30 hours too, based on recent experience too
My 350 EXC-F holds 1.2l and is wet sump, whereas my XR400R has a massive (in size) air cooled engine which is dry sump and holds 1.8l, so only half a litre difference and not a lot considering the engine is 30% bigger in size
I had a reverse engine Yamaha WR250F, similar in engine physical size to the 350 Exc-F and the Yamaha only holds 800ml of oil, so 2/3rds of the KTM 1.2l
As you say these engines have a fair bit of strength and a decent oil capacity