Question about 2000 Yamaha XJ 900 S Diversion

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Oil The oil looks white. what should I do? air cold xj900

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Being an air cooled bike, odd to have white oil. Generally points to there being water in the oil. Truns white with the extreme mixing process inside the rotating engine. I can only suggest that if the bike is only used for short trips, that it has a buildup of condensation in the sump that is not "boiled" off by getting to full operating tempeture.
I suggest draining the oil straight away, and replacing it. Go for a 50 k ride, and check it again, if it still has some contaqmination, change the oil again. It may take 2 changes to clear the problem.
Taking the machine for a decent run every week to get it to full operating temp will help to eliminate the condensation issue.


Posted on Dec 10, 2008


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