Harley fork oil

[Ratbike]

At first I was going to agree with jr and go with 10wt. I switched over to belray 15wt fork oil and it seamed to be much stiffer (the forks). Now I just don't know what to think maybe we should come up with the international HCG standard for weights, measures, and the size of a beer.

[Yotee]

Thanks for all the input guys. I was thinking it was 10W or 15W myself, but can't remember where I came to that conclusion. Maybe I will just start out with some Bel Ray 5W and work up from there.

[Horse]

Ripped this off another site, take it for what it's worth.

"There seems to be some confusion about fork oil weights. Here's a list of them and the associated weight of the oils. If you want to make your front end firmer, you can go to a heavier weight oil.

Fork Oil - 16oz. Type E 5wt. Type E is for "Showa" forks.Part # 99884-80

Fork Oil - 16oz. Type B 10w. Fork Oil - See owners manual for recommended style. Part # 99880-73

Screamin’ Eagle® Performance Fork Oil - A heavier oil (15wt) provides extra damping in performance application. Part # 99881-87 . Works well to take the dive out of the front end on breaking.

Screamin’ Eagle® Racing Fork Oil - Designed and blended for the severe conditions on the race track (20wt). Not intended for street use.
Part # 99909-93R

There are also other options for tuning the forks on your bike. Bel Ray makes a host of different weight oils to do this also available in 5wt, 7wt, 10wt, 15wt, 20wt and 30wt.

www.belray.com/consumer/productpages/hpfo.html


Stiffness of forks is purely personal preference. A heavier fork oil will not create a stiffer fork, but it will slow down the damping response. This is good for handling, up to a point. A fork with heavier oil won't dive as quickly when you grab a handful of front brake heading into a turn. It also won't wallow as much in a fast turn. All this is good, up to a point. A fork that's too heavy provides a harsh ride and can cause a loss of traction over stutter bumps in a turn. You need to decide what's best for you. If you're happy with the way the bike handles now, then stick with factory recommended weight of fork oil which in most Harleys is a 5 wt oil."

[dannytheman]

Believe it Not, After several exhaustive hours in the Lab, its 30 weight.

How did you determine that?

I was soooo hoping he said he tasted it!!


I'm so disappointed!!