Recent Topics
Wiha screwdrivers
by Donald
02/08/16 05:05 PM
How Can I Print 755 Mailing Labels For Post Cards?
by crazyoildude
02/08/16 04:17 PM
Valvoline Full Synthetic High Mileage and Blend HM
by mctmatt
02/08/16 03:59 PM
Delo 400 Severe Duty?
by 333jeffery
02/08/16 03:56 PM
2016 Civic sedan is selling very well
by HTSS_TR
02/08/16 03:24 PM
Oil suggestion for 2013 Honda CR-V
by Mar57
02/08/16 03:02 PM
STOP CALLING ME!!!!
by NHHEMI
02/08/16 02:33 PM
Need oil suggestion for high mileage 2003 WRX
by xmakeafistx
02/08/16 01:09 PM
09 VW Passat Wagon 2.0TSI 4900mi Castrol 0w40 Euro
by gerkin85
02/08/16 12:48 PM
Oil/filter recommendation for short trips
by DrRoughneck
02/08/16 12:46 PM
Auto Zone brand oil on clearance (YMMV)
by blupupher
02/08/16 11:20 AM
M1 5w30 HM / 5512 Miles / Turbo with Towing
by Astro_Guy
02/08/16 11:10 AM
Newest Members
slewman, lithium1189, Monktana, djh3, Compignite
56850 Registered Users
Who's Online
98 registered (901Memphis, 87sammy, 2oldtommy, 2010Civic, 97f150, 8 invisible), 1644 Guests and 227 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
56850 Members
66 Forums
244413 Topics
3980032 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#754926 - 10/26/06 06:36 AM Good transmission fluid for a 2006 HD Sportster?
Chris B. Offline


Registered: 03/16/03
Posts: 3104
Loc: Colorado
I'm wondering what a good tranny fluid would be? I hear Mobil 1 75w90 gear oil is a good choice. Is it better then what ever the HD dealer uses? Will it meet my warranty requirments? Thanks for any segestions!!!!

Top
#754927 - 10/26/06 06:37 AM Re: Good transmission fluid for a 2006 HD Sportste [Re: Chris B.]
Ned Nimrod Offline


Registered: 08/07/03
Posts: 12
Loc: Fort Pierce, Florida
That is what I use in my '05

Top
#754928 - 10/31/06 01:15 AM Re: Good transmission fluid for a 2006 HD Sportste [Re: Ned Nimrod]
cfromc Offline


Registered: 07/28/06
Posts: 735
Loc: Illinois
I've used it before with good results. Next season I'm trying Redline's MT-90 as it is specifically a transmission fluid and not a "gear lube" although they are likely very close to the same thing.

Top
#754929 - 10/31/06 02:36 AM Re: Good transmission fluid for a 2006 HD Sportste [Re: cfromc]
Mr. Boston Offline


Registered: 10/12/05
Posts: 231
Loc: Kansas
Isn't that a bit heavy? I'll be changing my Sporty fluid in the spring.

Top
#754930 - 10/31/06 08:20 PM Re: Good transmission fluid for a 2006 HD Sportste [Re: Mr. Boston]
Norm Olt Offline


Registered: 01/27/03
Posts: 1829
Loc: Pac NW
Amsoil makes an excellent 75W-90 product, too!

I guess you could always give one of the synthetics a try: you'll know which one shifts best before very long.

Cheers!
_________________________
14Outback 10K
01ValkyrieIS 6K
93ZX11D 30K
87F250 185K
88420SEL 178K
88420SEL 212K (parts)
91420SEL 235K
92SVX 182K
00Nighthawk250 1.5K
93SC400 105K
85F150 104K

Top
#754931 - 11/04/06 04:59 PM Re: Good transmission fluid for a 2006 HD Sportster? [Re: Chris B.]
KBFXDLI Offline


Registered: 01/30/06
Posts: 719
Loc: Ohio
I do believe the Sportster has a shared primary & trans sump so I would try Mobil1Vtwin 20w50

Top
#754932 - 11/05/06 11:07 AM Re: Good transmission fluid for a 2006 HD Sportster? [Re: KBFXDLI]
Chris B. Offline


Registered: 03/16/03
Posts: 3104
Loc: Colorado
Isn't the primary the tranny?

Top
#754933 - 11/05/06 06:27 PM Re: Good transmission fluid for a 2006 HD Sportste [Re: Chris B.]
Mike_dup1 Offline


Registered: 11/17/02
Posts: 3012
Loc: USA-Michigan
from HD spec;s it says;

Primary Drive - Three-row chain
Transmission Type - Constant mesh, foot shift
_________________________
2012 Sierra Denali CC 6.2L AWD
2009 Cadillac CTS4
2010 John Deere X728SE
2006 Honda Rincon 680

Top
#754934 - 11/06/06 12:26 AM Re: Good transmission fluid for a 2006 HD Sportste [Re: Mike_dup1]
cousincletus Offline


Registered: 09/25/02
Posts: 2513
Loc: Richmond, VA
I used nothing but H-D Sport Trans fluid in my 1992 Sportster. Worked well for me.
_________________________

Fleet: 08 Chevy Colorado, 08 Malibu (wife's), 04 Impala.

Top
#754935 - 11/06/06 01:56 AM Re: Good transmission fluid for a 2006 HD Sportste [Re: cousincletus]
cfromc Offline


Registered: 07/28/06
Posts: 735
Loc: Illinois
The primary shares fluid with the tranny, but they are two separate assemblies. The primary houses the sprocket coming off the engine, the chain that transfers power from that sprocket to the clutch, the clutch itself, and the alternator assembly. At the bottom of the primary there is a fluid passage to the transmission. I have used Sport Trans fluid with decent results but I have noticed an improvement in shifting with other fluids.

Since the fluid must provide lubrication for the transmission, I would not use an engine oil since it will quickly shear down. A 75W-90 gear lube or manual transmission lubricant (MTL) is basically the same viscosity as a 20W-50 engine oil yet is made to resist the shearing of the transmission gears. I have seen UOAs of 20W-50 that has sheared to a thin 40-weight oil in less than 3,000 miles when used in a Harley transmission.


Edited by cfromc (11/06/06 02:02 AM)

Top
#754936 - 11/08/06 07:12 AM Re: Good transmission fluid for a 2006 HD Sportste [Re: cfromc]
KBFXDLI Offline


Registered: 01/30/06
Posts: 719
Loc: Ohio
Quote:

The primary shares fluid with the tranny, but they are two separate assemblies. The primary houses the sprocket coming off the engine, the chain that transfers power from that sprocket to the clutch, the clutch itself, and the alternator assembly. At the bottom of the primary there is a fluid passage to the transmission. I have used Sport Trans fluid with decent results but I have noticed an improvement in shifting with other fluids.

Since the fluid must provide lubrication for the transmission, I would not use an engine oil since it will quickly shear down. A 75W-90 gear lube or manual transmission lubricant (MTL) is basically the same viscosity as a 20W-50 engine oil yet is made to resist the shearing of the transmission gears. I have seen UOAs of 20W-50 that has sheared to a thin 40-weight oil in less than 3,000 miles when used in a Harley transmission.




You are probably right about the shearing. But I used to change my oil in my Sportster at 3000 because of that reason. I now have a Dyna Low Rider which has seperate trans & engine & primary sumps and use Mobil1Vtwin20w50 in the engine, redline MTL in the primary and redline shockproof heavy in the trans. ALL work well. The best advice might be to call Redline and ask what they recommend for the Sportster shared sump. They seem to be very knowledgeable.
_________________________
KB-FXDLI. GC ist für deutsche Amerikanerautos der Auto-nicht

Top
#754937 - 11/08/06 08:49 AM Re: Good transmission fluid for a 2006 HD Sportste [Re: KBFXDLI]
cfromc Offline


Registered: 07/28/06
Posts: 735
Loc: Illinois
They recommended their 75W-90NS or their MT-90 to me. I've used their 75W-90 and 75W-90NS in the past and will have the MT-90 next season.

Top
#754938 - 11/08/06 03:06 PM Re: Good transmission fluid for a 2006 HD Sportster? [Re: Chris B.]
Big Dave Offline


Registered: 05/28/04
Posts: 178
Loc: Indiana
I don't know that the M1 75W-90 gear lube or any gear lube is suitable for a wet clutch application, certainly in a Big Twin with its seperate trans it would be fine. Also there has been some concern voiced on other forums of using gear lubes in this kind of application doing some damage to the windings in the stator.

I would think using what ever oil you use in the engine would be suitable for the trans/primary. In my Buell as well as my past Sportsters I've use M1 20W-50 in both holes with great results.

David
_________________________
'89 Porsche 3.2 Coupe-Brad Penn 20W-50
'06 VW GTI/DSG-GC
'13 Subaru BRZ-Eneos Sustina 0-20
'05 Honda XR650L-M1 10-40 M/C

Top
#754939 - 11/09/06 08:12 AM Re: Good transmission fluid for a 2006 HD Sportster? [Re: Big Dave]
Chris B. Offline


Registered: 03/16/03
Posts: 3104
Loc: Colorado
I'm not up to date on the tranny/primary/wet clutch talk.

I'm under the impression that my 2006 1200 Sportster only has 2 fluids, the engine oil and the tranny oil....is that correct? What is a wet clutch? I think someone else answered that for me but I can't find it.

I was just wondering what a good tranny fluid would be besides what the dealer sells as they are a rip off!

Top
#754940 - 11/09/06 05:24 PM Re: Good transmission fluid for a 2006 HD Sportste [Re: Chris B.]
Mike_dup1 Offline


Registered: 11/17/02
Posts: 3012
Loc: USA-Michigan
Does your owners manual not spell out what fluids to use? Or does HD make it so hard to find out because they want you loyal to products they have? I have a friend who found out his dealer is a Ahole on that subject. He (the dealer) flatly refused to put Mobil in the bike for him (this guy won't get his hands dirty), its HD oil or take a hike! Really ticked him off. btw-He said the service guy was hardcore HD, tatoo's, clothing. was a walkingHD billboard and a jerk. Not sure where the dealer is but is in Northern Wis.
_________________________
2012 Sierra Denali CC 6.2L AWD
2009 Cadillac CTS4
2010 John Deere X728SE
2006 Honda Rincon 680

Top
Page 1 of 2 1 2 >