[DMdh]

Hello, I noticed that at the end or my runs the damping seems to go away a little (less rebound and less compression) I thought that It could be the oil getting lighter with the heat, so I checked this oil chart

http://www.peterverdone.com/wiki/images/a/a7/PVD-ISO-Viscosity-Data.gif

and saw that my oil (motorex racing fork oil 7.5 wt) has 35.90 cst@40 C and a VI of 190.
Next to it there is the Silkolene pro rsf 7.5wt with 37cst@40 C and a VI of 322.

My question is if a VI of 322 would solve my problem with the oil getting lighter?

and the difference in cst@40 C is big enough to give me a firmer damping? (I dont want it to.)

thanks.

 

[TrumbullHucker]

what kind of fork do you have?

in for geek stuff

 

[canadmos]

There are a few other threads on this I think too. They have some super good information.

 

[DMdh]

what kind of fork do you have?

in for geek stuff

Dorado 2013, but its not the stock oil.

There are a few other threads on this I think too. They have some super good information.

Found one but it didnt answer my question really, if you find the threads post them here if you dont mind.

thanks.

 

[MmmBones]

here's an easier to read index chart http://mahonkin.com/~milktree/motorcycles/fork-oil.html

it doesn't have the Motorex listed but it's clear that the Silkolene Pro RSF 7.5 is the way to go if you'd like to make it more consistent cuz the difference in cst@40/100 won't be as much of a change in damping as you currently experience.

 

[tacubaya]

Hello, I noticed that at the end or my runs the damping seems to go away a little (less rebound and less compression) I thought that It could be the oil getting lighter with the heat, so I checked this oil chart

http://www.peterverdone.com/wiki/images/a/a7/PVD-ISO-Viscosity-Data.gif

and saw that my oil (motorex racing fork oil 7.5 wt) has 35.90 cst@40 C and a VI of 190.
Next to it there is the Silkolene pro rsf 7.5wt with 37cst@40 C and a VI of 322.

My question is if a VI of 322 would solve my problem with the oil getting lighter?

and the difference in cst@40 C is big enough to give me a firmer damping? (I dont want it to.)

thanks.

Higher VI does mean less viscosity change with temperature change, but I think in a high volume system like the Dorado, heat is not an issue. I'd choose a high quality fork oil with good anti-foaming agents to keep the performance consistent.