How to change fork oil on 2002 dyna low rider can a thicker oil be used

nearly 10.5 ounces

Well, what is it, 2005 FXDLI or a 2002 Ultra classic???

2001
FXDWG
FXDL
FXD
FXDX
FXDXTFRONT FORK-- ALL = 9.2oz .27 litre

I do not have a repair manual in front of me but from what I recall the Dyna Low Rider forks where 35mm but later changed to 39mm.

I’m happy to help further over the phone at https://www.6ya.com/expert/al_e83b1941f9c0f302

On the front forks, you can change to a heavier fork oil. I run 30 wt. fork oil in my '94 FXDWG. On the rear, tighten the shocks up by adjusting the ring at the bottom of the spring. Turning the ring increases or decreases the preload on the spings depending on which way you turn the ring.

Good Luck
Steve

If I am not mistaken. You will need ten ounces per side ounce you have completely drained them

your local hd shop should be able to answer this for you as its a mesured amount and to much or too little will make the bike not handle right