you have to know that the SAE weight system has a very broad and vague viscosity range and does not even cover the viscosity range that most quality motorcycle suspension systems require.
look post #16
yes I use finally a 7,5 but this is a mix 1:1 Motul Expert
SAE 5 and SAE 10
this viscosity is near the Marzocchi fork oil of 26,1 cSt@40C
good luck
my springs 4,5N/mm with 5mm preload
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Husqvarna TE 300
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