Leaderboard

This is what you want to look at http://www.peterverdone.com/archive/lowspeed.htm There's a white table about halfway down which lists the measured viscosities for a large number of commercial fork oils. Probably the most relevant numbers are the viscosity at 40C (in centistokes, the viscosity unit, cSt), and the Viscosity Index (VI) which indicates the variation in viscosity with temperature, higher numbers are generally better (less variation). I'm pretty sure the NC forks will have the Showa SS-8 oil from the factory, a nominally 10wt oil around 36cSt and VI of

Embee has previously given some good info on this subject. There are tables produced by a few labs that helps us decide what brands and weights are equivalent. Our bikes come with a Showa fork oil of nominally 10wt and if you fancy putting in a lighter weight oil then you need to consult the tables because another manufacturers 7.5wt oil may actually be more viscous than the standard Showa stuff I have now got Fuchs 7.5. in - Murray can tell us whether it's more or less viscous. In any case I'm pleased with it mike

The tapered bearings and races I got online from Marksman Industrial, they list a set of the NC700X, the lowers were Koyo, the uppers were unbranded, used Rock Oil EP lithium based grease with them. I was actually planning to do my chain and sprockets this weekend but the chain's not turning up until Monday, so rather than waste the weekend weather I thought I'd dive in and do the head bearings, and If I was going to do that I may as well do the fork oil and also the tappets. So as a spur of the moment thing, the bike shop I was in had a choice of Silkolene 10 or Rock Oil 7.5, went for the Ro

I reckon as a rule of thumb that fork oil deteriorates significantly beyond 10k miles. If you get any moisture at all in there it can smell like a camel's jockstrap, I always suspected it's bacterial but may be wrong, not pleasant stuff anyway, I wouldn't recommend a dab behind the ears on a Friday night if you have any hope of pulling. ...oh no, I'm beginning to sound like Andy .........................