I'm just about to replace the front fork oil on my K8A wee.
I know 10W is the standard weight. But has anyone tried 15W?
any thoughts? I want to reduce the front end dive.
maybe a mix and get 12.5W?????
I don't really want to do it more then once so look forward to you thoughts.

With the stock springs stick with 10w. 15w will slow down the rate of dive just a little, but it will still dive just as much.

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Rich Desmond
'07 DL650, '01 DR-Z400S, '99 SV650 (race bike), '80 GS1000S, '85 RZ350, '08 Ducati 848

FYI.

10-12W is ~ the same weight as Dextron III ATF. (*1)

Considerably cheaper than fork oil and lasts a lot better.

1) It's a bit heavier than Suzuki SS-08 (A-B comparison on my L2).

Pete