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Thread: Fork Oil - What single weight? Reply to Thread
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  Topic Review (Newest First)
09-08-2013 04:46 PM
denny6006 I replaced the stock 10w in mine with fresh factory spec oil and the difference is amazing. you should really check your steering head bearings as well. Ehey can definitely cause the problems you describe as well as the previous suggestions offered,

I have used ATF as well and it is usually 10w as well.

09-08-2013 01:44 PM
Joe in PA I am a petite 6' and 265lbs and do have a full windscreen on the bike. The progressive springs are now on my want list but being retired it may be awhile before I can come up with the $$$.

Thanks for the info.
09-08-2013 01:40 PM
Knifemaker How big a guy are you Joe? do you have a windscreen?
As mentioned.....better springs will make more of a difference, and so would a fork brace. I think a 20w fork oil would make the ride too harsh, and be even worse if your springs are shot.

As always, your want an even compromise here, stiff enough to feel solid in turns but soft enough you don't feel like you're being beaten up by every ripple and bump in the road. Your discription of "symptoms" are those two different areas...
"I soon noticed that the front end would get a little squirrely if push too hard in the twisties or dealing with some of our back roads that have been beat to death by the local Amish horse & buggies."

But the bike lacks the suspension, front or rear, where its going to do well on crappy roads. Simply lacks the travel really.

If your springs feel too soft and you can't afford new springs, you can try adding a little more preload to the stock ones. A 3/4 inch stack of the right sized washers on top of each spring might help.
09-07-2013 10:25 PM
Wolfie There aint much diff between 10 and 20....minimal at most....Im thinking your springs may be shot (mine were)....easy changeover....but yer talkin a few bucks....like around $80....worth it though, IMO....the rear aint as critical as the front....I was lucky enough to get forks from Shark with good springs....I still need to reinstall the air assist due to my heavy fairing....

09-07-2013 10:02 PM
Joe in PA Well I looked in the shop manual again and it definitely says 10w20. Already purchased a bottle of 10w so that's what will be going in tomorrow. If I don't like how it feels, guess I'll be spending another $12 on a bottle of 20w.
09-07-2013 09:55 PM
Wolfie Weird....3 posts now that arent showing.....anyway, I use Bel-ray 20...its whats recommended for Harleys with the same forks (Showa)....

09-07-2013 05:59 PM
M_Angell I rebuild all of mine with atf. Haven't had a single complaint yet.
09-07-2013 05:39 PM
Jakzen X2 on the progressives (about $70 from powersport superstore). The manual says 10w, but the stuff I got is 10w20.

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09-07-2013 01:18 PM
Spockster Many people just use ATF with no problems.

10w20 written like that is a multi-weight. 10-20w or 10w-20w would read 10 to 20 weight, but it only takes one slip of a finger and one sleepy proofreader...
09-07-2013 12:55 PM
Joe in PA Maybe I misread the manual as the norm seems to be single weight. Going to go with 10 and see what happens.

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