Using fully synthetic 10-40w which have also used on KXF 250 and 14-18 YZ250F with no problems.
Perhaps I should look into semi synthetic oil instead?
No, if it ain’t broke, don’t fix it. On the ‘18 yz450f and 2019 yz250f I have, it was a really noticeable slipping on the synthetics I was asked to try.
Back to the OP’s question, no I haven’t had the same issue, neither has Keefer. So he says, when he tested the yz250f and he said he is known to use the clutch a lot.
I would go to his site and ask him the question, he will answer.
Paw Paw
Perhaps I should look into semi synthetic oil instead?
Paw Paw
The Shop
Back to the OP’s question, no I haven’t had the same issue, neither has Keefer. So he says, when he tested the yz250f and he said he is known to use the clutch a lot.
I would go to his site and ask him the question, he will answer.
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