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Gas smell in new oil that bike came with after 450 miles

1K views 2 replies 3 participants last post by  Bluechain 
#1 ·
Hi, just bought a 2021 ninja 400. After 450 miles, I changed the oil. Draining the oil, I smelled some gas odor in the oil. I’m figuring that before the rings seated, some gas might have gotten past the rings. Any opinions?
 
#3 ·
:cool: That is why it is good to do a early change, I did my Ninja at 300 and 750, Always drain when hot and always warm up the engine real good before starting out on the first ride in the morning, after changing out the oil and after a ride recheck the smell at the filler hole and you should be ok, it is from the rings not being seated good yet so some fuel goes by the rings into the crankcase,(y)
 
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