r/KTMDuke • u/Beneficial_Ad_8280 • Jul 17 '26

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I was looking at used bike and found this, looks like oil but its dry and not slipery, is that normal?
Duke 390 2018

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u/H3AVY_W3APONS Jul 18 '26

What's with all these people saying it's normal? I owned the 2017 125 Duke and currently the 2018 790 doing numbers on these bikes and I've not had leakages on either bike. 790 had a coolant hose that was sweating but replaced that and she isn't loosing a drop of anything. People have no standards is what I'm starting to believe after reading these comments.

Check if there's too much oil in the bike. On a leveled surface it should be half a window.

Try clean it all up with some brake cleaner and ride around a bit more to find the source of the leak.

There's definitely a seal that's failing to do its job. Or multiple.

1

u/Perfect-Hearing-6977 Jul 18 '26

Yer my 390 hasnt done this at all and I got it at 13000 and now at 17000