So, interim oil changes & frequent inspections we can do ourselves but off to the dealer for 600 mile check & major intervals from there on. Btw, got my new bike Friday but only have 2 miles before my garage door broke & couldn't budge it until the repair guy came yesterday. So, car & new bike stuck inside the freaking house! A few other new parts like time chain guide rail, valve stem oil seals, gaskets and odds and ends. Whole thing cost under $1,000 including all the tools I needed to buy and it was a great learning experience. Update: Bikes been running great for the first 100 miles. Oil looks new. Temps are good. (Hover over the pictures below for more details Metal is different in newer bikes. I don't pretend to know when newer starts, however, my 82 Suzuki GS450 needs valve adjustments like clockwork every 4k miles. The bike will start running bad a couple hundred miles after 4k. I do the adjustments myself cuz the bike is stupid simple, and it runs like a top again. So the dealer that sold me the bike didnt say anything specific about oil, and the local KTM dealer closest to me just uses 15w-50 rock oil. Scuderia, and Pinit which are both quite abit further from me say only to use motorex 10w-60 like it says in the manual. KTM took some getting used to, but after the first few months, maintenance is no big deal. The usual, like air filter cleaning and oil changes. KTM manual reccommends oil changes every 25 liters, which is every 10 tanks of gas, about 400 miles or so. That's not so bad, no worse than an XR. Mostpeople tend to change the oil more than necessary. Normally 200-300 hrs is fine unless you are really revving the crap out of the bike. On the 250sx that i race in the dezert, i'm pretty intense on maintenance. I never go more than 150 hrs on a piston. in 25,000 hard offroad miles with 3 different bikes, I've yet to even look at a clutch plate. At 500 hours, the oil needs to be changed and there is a chance that the shock has been damaged. Under hard riding conditions, such as racing, oil should be changed every 10-20 hours. I might shoot for 50 hours on my dirtbikes/dual sports and I can definitely feel a difference in the suspension when it is done. #7. Oil change frequency for KTM Duke 390 usually depends on various factors including riding conditions, climate, and type of oil used. According to the manual, the KTM 390 Duke has a relatively short service interval of 4650 miles or 7500 km. .

ktm 690 oil change interval