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  1. KTM Duke General Discussion
    I just had my 2021 390 adventure used in Beijing, the summer temperature can reach 100℉ and the winter can be as low as 10℉. So I am thinking using 10w50 in fall and winter and 15w50 in summer. Here is the problem. In April I used 5100 10w50 for 1000 miles, I found this oil is thin after hard...
  2. Issues and Troubleshooting
    I changed the engine oil of my 2017 Duke 390 to Motul 300V 15W50 from Motul 7100 15W50. The engine oil dropped close to 300 ml within 250 Kms. Today I noticed that there is smoke from exhaust when revved hard. The bike has run only 20000 kms and was regularly serviced. I don't see any reasons...
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