What weight of fork oil?

[Billy Golightly]

I'm getting ready to redo the frontend on my Z, and was wondering what weight fork oil you guys think I should use? Dennis Kirk lists it from 2.5 all the way to 30 which I know is to thick. I'll be mostly in the woods with some light to moderate jumping. I'll also be putting in Progressive fork springs.

[MTS]

i hear you can just use ATF and 20w is good also..:)

[BigGreenMachine]

I'm trying 10W30 in my Tecate tomorrow with the Progressive springs, should be a roller tomorrow.

[BigGreenMachine]

Question: Are you going to put any air in your forks or just oil and the springs/preload spacers?

[TimSr]

Im trying to remember is you have progressive springs, but I know you have 85 forks, same as me. I ran 30w with standard springs to slow bottoming while MXing which made for a very rough ride under normal riding. After I got the new springs and corrected that problem, I went to 20w which is still too much fork dampening. I got some 15w Ill be putting in because I have it here, but I could probably better use 5w or 10w. Thats probably where you would be better off. Heavier oil can be used as a bandaid for requent bottoming, as it slows fork action, but its not the right fix, and your ride will suffer.

[Billy Golightly]

I don't have progressives now, but when I order the seals I will probably go ahead and get some. I'm a little bit bigger guy then you TimSr, so I'll try out some 10wt and see how that works out.

After I get the front done I'll move towards the back. I've already installed a +4 Durablue axle from a YFZ450, talk about a difference. It rails through the corners like my trx250r now. Probably try to go with a warrior shock. Works makes some for the rear but man they are PRICEY.

[Billy Golightly]

Question: Are you going to put any air in your forks or just oil and the springs/preload spacers?

Probably just spacers. I'll see how it rides though, I might add 1-2 psi if it feels to soft.

[trikerider2oo7]

i do about the same riding as you and i just used atf in mine. but idk about it w/ the progressive fork springs

[03 ORANGE SHEE]

im run bel ray 20wt, stock springs, on my z's