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[Closed] Fork Oil

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[#1287518]

Going to attempt a service on my Marzocchi Z3 forks at the weekend. does anyone have any recommendations for oil?


 
Posted : 02/02/2010 11:27 pm
 Taff
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Rock Oil or Silkolene are fine. Just make sure the weight is the correct one from your service guide.


 
Posted : 02/02/2010 11:52 pm
 mboy
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Putoline also good... As are some other brands not yet mentioned yet but I can't think right now.

Just make sure it's fully synthetic Motocross fork oil you're buying, not the cheaper stuff.

Oh, and for a Marzocchi fork, unless you're very light or very heavy, it'll be 7.5wt fork oil you need.


 
Posted : 03/02/2010 1:00 am
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Silkolene comes in pretty colours, so I use it. Though I seem to remember a rumour that silkolene doesn't mix with Marzocchi seals- I strongly suspect it's cobblers but you never know.

Trouble is that fork oil viscosity actually varies wildly from manufacturer to manufacturer, so 2 different manufacturers' 5W doesn't neccesarily perform the same.

(oh, also note that if you need 7.5, and you can't find it, you can't make it with a 50/50 mix of 10W and 5W- the mix is different, though I can't recall what the correct ratio is)


 
Posted : 03/02/2010 1:38 am
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Indeed...just to confuse matters!
http://www.peterverdonedesigns.com/lowspeed.htm


 
Posted : 03/02/2010 3:14 am
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(oh, also note that if you need 7.5, and you can't find it, you can't make it with a 50/50 mix of 10W and 5W- the mix is different, though I can't recall what the correct ratio is)

Though i should add...in terns of the cSt of a fluid (which is what you should go by, not the WT) then a 50/50 mix of fluids will give a cSt halfway inbetween.


 
Posted : 03/02/2010 12:22 pm
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In fact here is a mix chart for silkolene rsf...

And here is where my oil come from...
http://www.sportsbikeshop.co.uk/motorcycle_parts/content_cat/810
Quite cheap considering free delivery for 3 pots.

Anywhere cheaper for silkolene?


 
Posted : 03/02/2010 12:27 pm