Fork Oil Change

Information on forks/springers/shocks
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1959pan

Fork Oil Change

#1

Post by 1959pan » Thu Jan 17, 2008 9:42 pm

I forgot what I used last time. I need to change the oil in my 70 Norton Commando and I figure I will have enough to do it and my 59 with stock legs. The Norton wants 20/30 wt fork or non detergent oil. What do you guys use in your HD's? Thanks.

Too cold to ride this weekend in Dallas so I thought I might f@@k something up in my spare time!



john HD
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#2

Post by john HD » Fri Jan 18, 2008 12:55 am

right now my forks have automatic transmission fluid in them as an experiment.

so far they are working properly.

my research tells me that is about 20 weight.

john

VT

#3

Post by VT » Fri Jan 18, 2008 2:57 am

Harley® fork oil works. 6-1/2 oz. (wet) or 7 oz. (dry).

FlatHeadSix
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#4

Post by FlatHeadSix » Fri Jan 18, 2008 4:30 am

John,

I dont know if you happened to notice the oil mist all over the top of my fork tins when we had the pans at Davenport. I had ATF in the forks as an experiment also, they seem to function ok, maybe a little softer, but I get a fine oil mist from the vents in hot weather after a day's ride. I didn't remember getting a noticeable oil slick before I filled the forks with DEXRON III. I may drain them again before riding season and refill with Harley fork oil, I'll let everyone know if it makes a difference.

mike

john HD
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#5

Post by john HD » Fri Jan 18, 2008 5:56 am

mike

i can't say that mine have ever had the oil mist you describe.

do you have the stock top air baffles in place?

john

Skip
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#6

Post by Skip » Fri Jan 18, 2008 2:38 pm

I go to the local auto parts store and get Belray 30 wt for dirt bikes.....works great....Skip

fourthgear
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#7

Post by fourthgear » Fri Jan 18, 2008 3:38 pm

There is a thread here about fork oil here some where . It came down to me using PJ 1 30# to get my newly rebuilt ( new upper & lower bushings ,springs , dampeners ,too )forks to operate correctly, but that's my hydro-glide forks and as you can see others have good results with other types of fork oils . I would start with the 20# fork oil first , I believe that's what they call med. weight fork oil, HD spec's.

FlatHeadSix
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#8

Post by FlatHeadSix » Sat Jan 19, 2008 1:01 am

Too cold to ride the Norton? What a Wimp! Back in my day we used to walk to school in the snow, barefoot, and it was up hill both ways.

Here's a picture of me and the '66 Norton at the University of Wisconsin in 197?, hell, I didn't even need gloves back then. Were we stupid, or what?

mike

Image

john HD
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#9

Post by john HD » Sat Jan 19, 2008 1:54 am

good one mike!

we used to ride to snowmobile functions and when asked what kind of sled we had we would always answer harley.

john :D

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