Oil to wp suspension

Hi there Rasmus,
welcome to the site.

Whereabout in Europe do you live?

May be the links below will help:

Rear shock manual from '99 onwards

WP Home Page

Rasmus said:

Hey.
I have A Husaberg Fe 501 from 2000. And I have A problem!
All the oil in my rear damper is gone. I think the reason is A leak in the bush or the seals. So my question is, what oil can I use? Is it A special oil or can I use the same as the fork (SAE 5). I live in Europe so if there is anyone there know where I can buy some seals, oil and bushings I will bee glad to know!
Thanks

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Hi Rasmus
It is not advisable to use fork oil in your shock- unless you know your fork oils. :?
.
Reason being that oil designed specifically for forks generally has a low V.I. (viscosity index) which means that as it heats up its viscosity changes dramatically, and your suspension behaves much differently between a cold and hot shock.

Forks are not subject to the temps a shock endures.

There are some fork oils that have high V.I.s that can do both fork and shock useage, but its a matter of knowing whats what.

Heres a link that explains all about it, as well as listing all the manufacturers true viscositys and V.I.s so you can select a suitable fluid, the chart at the page end being very useful.

http://www.peterverdonedesigns.com/lowspeed.htm

You'll also need specialist gear to regass.

Steve

Hi Rasmus,

what you need is specific damper oil, the fork oil doesn´t work.
It doesn´t need to be the WP-oil, you can use shock-oil from another brands (eg.öhlins,motul, or whatever you have easy acces on)

If you´re mechanically skilled, it should be no big deal to change to oil by yourself, BUT: you´re not done yet!
you need to pressurize your shock with nitrogen - this can´t be done at home
My advise:sent it to specialist and let him to the "overhaul" - if the shock is "open" he can also revalve it to your specific needs :thumbup:

Hope I could help you

here are some german-links, you need to google yourself more into details
http://www.franzracing.de/
http://www.tkmtuning.de/

Rasmus said:

I live in Denmark (Aarhus). I have seen the manual for the rear shock. But it didnt specify what oil need'ed. It say's A special WP oil!!! But can I do it, without the special tools?? Or do I need to send it to A specialist?
Thanks

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Rasmus,

If you only plan on doing it once to get your bike back in action, my advice is to take it to a specialist.Much less headache.

If you plan on doing your own rebuilds/services at regular intervals and maybe some for friends, then its worth sourcing/making the correct tools.

I do my shocks "at home", but I never would have gone to the trouble of sourcing/making the required tools for a once of rebuild.

I service my shock 2- 3 times a year on average, so I considered it worthwile "tooling up" to do so.

A well known WP tuner recommended fluid of 15.2 cs t @40C for PDS useage, but its V.I. is a bit lower than some recommend, so Im looking for a fluid with similar viscosity but better V.I when my current supply runs out.

Being an oil related? issue, no doubt others will have their own recommendations too.