Front fork oil

Hi,does anyone know how many ml of fork oil to put into each front fork according to the manual?? Is Maxima 15w a good fork oil or something thinner like 10w??? I find the front fork a bit soft.
 
From the workshop manual

Quantity: 545.0 cm³ = 545.0 ml (18.43 US oz) (19.18 Imp.oz)
Recommended oil: Yamaha Suspension oil 01 or equivalent

If you are going to use Maxima oil then the most similar to the original yamaha oil are these two
Maxima Fork Oil 5w and Maxima Racing Fork Fluid (85/150, 5w)

So 15w is a bit to much, personally I would maybe go for Maxima 7.5w if I wanted yo make it a little bit less soft.
 
Thicker oil is not the wat to go with these forks... 5 or 7.5 flows through the valves much easier, allowing for the forks to be more responsive.... thick oil doesn't flow as well and they will be less responsive, giving more of a jarring ride....
 
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