what kind of oil weight am i supposed to be putting in the lowers in a 2010 40? the manual says 7wt.. yet the oil volumes chart ( http://www.foxracingshox.com/fox_tech_center/owners_manuals/010/eng/index.html ) says 7wt for the pre-2010 models and 10wt for everything for 2010
40 oil
- Thread starter ronan
- Start date
fork oil. 7~7.5 wt for 2009 and earlier, 10wt for 2010.
Best place to pick up fork oil is a motorcycle shop.
what exactly changed? i still have half a tub of 7wt from fox.. seems weird they would change oil weight in the lowers and allow other companies to profit on it rather then fox
not sure. for the legs, it basically acts as an internal lubricant AFAIK. You'd probably be OK running 7.5 wt.
Fox does make 10wt oil now. If you have 7 wt. then just use that until you run out.
Since the 40's are sealed cartridge, the oil in the legs only lubricates the seals/stanchions. It doesn't do any damping, so any wt will be fine. I think they changed to 10wt to prevent new owners from having to buy two different jugs of oil to service their fork.
Pre-2010 Fox oil was Torco 10wt that Fox called 7wt. 2010+ Fox oil is Silkolene 10wt. Silkolene makes some of the best suspension oil around, it lasts a lot longer than most, and a lot of factory offroad motorsports teams use it. But for the semi-bath lube in the lowers, just use synthetic multi-weight motor oil or ATF. They are cheaper and adhere well, and do just fine lubricating the bushings and stanchions.
For the legs/lubricating oil, you can run just about any normal fork oil. The only place you'll notice a performance difference is in the damper oil (not the same as the oil you just dump in).
