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Discussion Starter · #1 ·
I'm changing seals on front forks on 1980 CM400T. Shop manual calls for "automatic transmission fluid" but my guess is that fork oil would be better solution. But I'm not sure what weight would be similar to transmission fluid. any suggestions? Not looking to change ride dynamics/geometry, want to maintain close to original ride height and feel.
 

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Try it with 10 or 15 weight to start, depends on your weight.
Problem is I don't think those forks don't have the normal drain bolts, so they have to be removed and turned upside down to drain, which really sucks.
 

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Discussion Starter · #3 ·
Thanks Bill. I have front end stripped down and old oil drained from forks so no problem there.
 
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