Type and Grade of Oil Specified

Stevie4scoops

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Sorry but I have another question on oil.

KTM specify semi-synthetic oil in the 390 Duke but fully synthetic in the 690 & 790 Dukes and 1190 Adventurer

Can anyone who knows about oil explain a reason for this? Is the 390 Duke engine design different or made out of materials that need semi-synthetic oil rather than fully synthetic?

If I used fully synthetic in a 390 Duke would I damage the engine?

Thanks
 
No, but you would probably be wasting your money....

...not convinced those with 1190 / 1290 are not doing the same when they use synthetic either, but if it makes you happy spend away!
 


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