The Yamaha XS500 typically requires about 10.5 ounces (310 milliliters) of fork oil per fork leg. It's essential to use the recommended viscosity, usually around 10W, for optimal performance. Always refer to the specific service manual for your model year, as there may be slight variations.
qt fork oil and type oil for the front fork on each side
352cc of 10wt fork oiul
3.7
r1 fork oil capacity
fork oil amount yamaha thunderace
According to the Yamaha Service Manual 17.6 US oz/18.3 Imp oz per fork is the standard capacity.
fork oil capacity for a 2009 yz450f is 6.73 us oz recommended oil is Yamaha suspension oil "S1"
7.8 oz. of 10wt fork oil
238ml per fork
Lance's Haynes manual says: Capacity: 555cc, Type: Yamaha fork oil "01" or equivalent
Each front fork holds: 400cm3 or 14.1 oz or 13.5 US oz.
There is an adaptor kit for an XS500. It is rare and very sort after. Available on ebay from time to time. You can cut a M20 thread on the casing and use a very easy to come by filter, or get an adapter made up at a local machine shop.