Slider oil
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,004
Likes: 7,539
From: Poolville
If that's a 39 mm front end I would start with 8 and 1/2 ounces dry in each leg and E (10 weight) fork oil. It looks like a wide glide front end.. I personally like a firmer feel. I use 20 weight..
Update.. I found this in another thread you just need to know what front end you have.. I believe the chart to be accurate... I'm thinking you have a wide glide front end, from your pics...
"Dry fork requires .5 to 1.0oz more than the wet amount due to residual oil left clinging inside the fork." Use 20 weight for average conditions. For extreme conditions use 10 weight or 30 weight accordingly."
-WET: Means you just drained the oil out of the plug and want to refill it.
-DRY: Means you dissassembled the forks and cleaned them dry inside/out.
WET.....DRY...(oz)............MODEL/YEAR.........................................
5.5 ..... 6.5 ...... Sportster thru 1972
5.0 ..... 6.0 ..... Sportster 1972-83
5.4 ..... 6.5 ..... Sportster 1984-87
9.0 ..... 10.2 ..... Sportster 1988-2003
10.5 .... 11.6 ..... Sportster 2004-08
9.0 ..... 10.2 ..... XL 883 Hugger thru 1991
10.7 ..... 12.1 ..... XL Hugger 1992-99
6.5 ..... 7.0 ..... FL/FLH 1948-E77
7.75 ..... 8.5 ..... FL/FLH L1977-84
7.75 ...... 8.5 ..... FLT 1980-97
8.7 ..... 9.7 ..... FLT 1998-2001
10.1 ..... 11.1 ...... FLHR 2002-09
5.5 ..... 6.5 ..... FX/FXE 1972
5.0 ..... 6.0 ..... FX/FXE 1973-83
6.0 ..... 7.0 ..... FXR/FXRS 1985-86
9.0 ..... 10.2 ..... FXR/FXRS 1991-94
9.2 ..... 10.2 ..... Dyna/Low Rider 1991-2005
10.2 ..... 11.2 ..... Dyna Wide Glide 1991-2005
9.0 ..... 10.2 ..... FXWG/FXST 1980-84
10.2 ..... 11.2 ..... FXWG/FXST 1985-2006
11.5 ..... 12.5 ..... FLST 1986-2006
12.4 ..... 13.4 ..... FLST 2007-09
11.5 ..... 12.5 ..... FXST 2007-09
10.5 ..... 11.6 ..... FXSTD 2007
Well I hope this helps atleast one person out. Cheers."
Update.. I found this in another thread you just need to know what front end you have.. I believe the chart to be accurate... I'm thinking you have a wide glide front end, from your pics...
"Dry fork requires .5 to 1.0oz more than the wet amount due to residual oil left clinging inside the fork." Use 20 weight for average conditions. For extreme conditions use 10 weight or 30 weight accordingly."
-WET: Means you just drained the oil out of the plug and want to refill it.
-DRY: Means you dissassembled the forks and cleaned them dry inside/out.
WET.....DRY...(oz)............MODEL/YEAR.........................................
5.5 ..... 6.5 ...... Sportster thru 1972
5.0 ..... 6.0 ..... Sportster 1972-83
5.4 ..... 6.5 ..... Sportster 1984-87
9.0 ..... 10.2 ..... Sportster 1988-2003
10.5 .... 11.6 ..... Sportster 2004-08
9.0 ..... 10.2 ..... XL 883 Hugger thru 1991
10.7 ..... 12.1 ..... XL Hugger 1992-99
6.5 ..... 7.0 ..... FL/FLH 1948-E77
7.75 ..... 8.5 ..... FL/FLH L1977-84
7.75 ...... 8.5 ..... FLT 1980-97
8.7 ..... 9.7 ..... FLT 1998-2001
10.1 ..... 11.1 ...... FLHR 2002-09
5.5 ..... 6.5 ..... FX/FXE 1972
5.0 ..... 6.0 ..... FX/FXE 1973-83
6.0 ..... 7.0 ..... FXR/FXRS 1985-86
9.0 ..... 10.2 ..... FXR/FXRS 1991-94
9.2 ..... 10.2 ..... Dyna/Low Rider 1991-2005
10.2 ..... 11.2 ..... Dyna Wide Glide 1991-2005
9.0 ..... 10.2 ..... FXWG/FXST 1980-84
10.2 ..... 11.2 ..... FXWG/FXST 1985-2006
11.5 ..... 12.5 ..... FLST 1986-2006
12.4 ..... 13.4 ..... FLST 2007-09
11.5 ..... 12.5 ..... FXST 2007-09
10.5 ..... 11.6 ..... FXSTD 2007
Well I hope this helps atleast one person out. Cheers."
Last edited by 98hotrodfatboy; Oct 25, 2019 at 11:17 AM.
Thread Starter
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Grand HDF Member
Joined: Oct 2014
Posts: 4,186
Likes: 6,617
From: Gruene Texas
I will go with the heavier weight being i'm heavier then average.
Great post. I've had them hanging from the shop ceiling well over a month, dripping ever so slowly. Probably going with 10.7 oz each, sorta split the difference.
Great post. I've had them hanging from the shop ceiling well over a month, dripping ever so slowly. Probably going with 10.7 oz each, sorta split the difference.
Last edited by almostakeeper; Oct 25, 2019 at 07:33 PM.
Ultimate HDF Member
Joined: Jul 2014
Posts: 5,649
Likes: 430
From: MASS_hole
Found you a great article. Cheating, I know (;
https://www.motorcyclistonline.com/r...sion-archives/
https://www.motorcyclistonline.com/r...sion-archives/
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