Harley Davidson Forums

curly howard · Jun 11th, 2012, 09:54 AM

been using amsoil 10w40 was thinking about going with spectro(not synthetic)heavy duty primary oil ,all ready run 75/140 6 speed syn in trans, any thoughts? also anyone know what weight the spectro primary oil is? dont say on bottle.

HermitKing · Jun 11th, 2012, 11:31 AM

If it is Spectro HD Primary oil, it is 85w.

TQuentin1 · Jun 11th, 2012, 11:33 AM

Quote: Originally Posted by curly howard View Post

been using amsoil 10w40 was thinking about going with spectro(not synthetic)heavy duty primary oil ,all ready run 75/140 6 speed syn in trans, any thoughts? also anyone know what weight the spectro primary oil is? dont say on bottle.

I have been running Spectro Heavy Duty Primary fluid in my '03 Ultra for a number of years. I like the Spectro product for this application, and the GL-5 6-spd tranny lube there. I use Mobil 1 VTwin 20W50 in the engine. Seems to be a good combo of products, but I change out all the fluids at the same time every 3-4K miles. Overkill, but cheap insurance from my perspective. Info here:

Spectro Primary Tech Data

TQ

Iceman24 · Jun 11th, 2012, 12:42 PM

Love it - like "liquid gold" in the primary...and tranny (I also run Spectro 6-speed GO).

curly howard · Jun 11th, 2012, 03:09 PM

so by 85w, i assume that it is a gear oil spec?

Iceman24 · Jun 11th, 2012, 05:05 PM

Yes & no...primary fluid's rated for your clutch + doubles as GO in Sportster case. For your touring bike regular motor oil's a tad light for clutch + GO's too heavy. Spectro 85W is specifically formulated for your clutch.

curly howard · Jun 11th, 2012, 05:50 PM

thanks for the info, much appreciated- spectro it is

67wizard · Jun 12th, 2012, 12:12 AM

I put Spectro in the primary and my clutch would slip, went back to formula+ and no more slipage. Go figure? I use their sixspeed the the trans.

y22c · Aug 1st, 2012, 09:36 AM

Spectro's primary is a 85W and that is a gear oil spec.

The oil IS NOT an engine oil so a gear oil spec must be used.

Jun 11th, 2012, 11:31 AM	#2
HermitKing Warming The Wheels Ride: 09 Road King Join Date: Apr 19th, 2012 Location: Badlands, SD Posts: 60 My Mood:	Re: spectro primary oil If it is Spectro HD Primary oil, it is 85w. __________________ HANG ON...SIT STILL...SHUT UP!

Jun 11th, 2012, 11:33 AM	#3
TQuentin1 Moderators Ride: '03 FLHTCUI (Ultra Classic) Join Date: Apr 4th, 2008 Location: Sugar Land, TX Posts: 4,174	Re: spectro primary oil Quote: Originally Posted by curly howard View Post been using amsoil 10w40 was thinking about going with spectro(not synthetic)heavy duty primary oil ,all ready run 75/140 6 speed syn in trans, any thoughts? also anyone know what weight the spectro primary oil is? dont say on bottle. I have been running Spectro Heavy Duty Primary fluid in my '03 Ultra for a number of years. I like the Spectro product for this application, and the GL-5 6-spd tranny lube there. I use Mobil 1 VTwin 20W50 in the engine. Seems to be a good combo of products, but I change out all the fluids at the same time every 3-4K miles. Overkill, but cheap insurance from my perspective. Info here: Spectro Primary Tech Data TQ __________________ Please stop by the "The Self-Help pages." >>Self-Help Information and Tips - Harley Davidson Community Self-Help Threads Information<< click me! Last edited by TQuentin1; Jun 11th, 2012 at 11:39 AM.

Jun 11th, 2012, 12:42 PM	#4
Iceman24 Community Leader Ride: 09 FLHX Street Glide Join Date: Sep 13th, 2009 Location: Eastern NE Posts: 3,431 My Mood:	Re: spectro primary oil Love it - like "liquid gold" in the primary...and tranny (I also run Spectro 6-speed GO). __________________ MSgt, USAF (Retired) 09 FLHX - Vivid Black 05 XL1200C - SOLD

Jun 11th, 2012, 03:09 PM	#5
curly howard Start The Engine Ride: 2008 flhtc Join Date: Aug 13th, 2011 Posts: 10 My Mood:	Re: spectro primary oil so by 85w, i assume that it is a gear oil spec?

Jun 11th, 2012, 05:05 PM	#6
Iceman24 Community Leader Ride: 09 FLHX Street Glide Join Date: Sep 13th, 2009 Location: Eastern NE Posts: 3,431 My Mood:	Re: spectro primary oil Yes & no...primary fluid's rated for your clutch + doubles as GO in Sportster case. For your touring bike regular motor oil's a tad light for clutch + GO's too heavy. Spectro 85W is specifically formulated for your clutch. __________________ MSgt, USAF (Retired) 09 FLHX - Vivid Black 05 XL1200C - SOLD

Harley Davidson Forums

Membership Benefits

spectro primary oil

Oil

Pages

Self Help Tips

Self Help Tips

Resources

Jun 11th, 2012, 05:50 PM	#7
curly howard Start The Engine Ride: 2008 flhtc Join Date: Aug 13th, 2011 Posts: 10 My Mood:	Re: spectro primary oil thanks for the info, much appreciated- spectro it is

Jun 12th, 2012, 12:12 AM	#8
67wizard Community Star Ride: 2010 Electra Glide® Ultra Classic Join Date: Jan 11th, 2010 Location: Nevada Posts: 393 My Mood:	Re: spectro primary oil I put Spectro in the primary and my clutch would slip, went back to formula+ and no more slipage. Go figure? I use their sixspeed the the trans. __________________ Having more fun than the law allows at 70 years young.

Aug 1st, 2012, 09:36 AM	#9
y22c Start The Engine Ride: FXDX Join Date: Aug 1st, 2012 Posts: 12	Re: spectro primary oil Spectro's primary is a 85W and that is a gear oil spec. The oil IS NOT an engine oil so a gear oil spec must be used.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
spectro	chuck60	Touring Models	44	Jan 20th, 2012 09:19 PM
spectro oil sae 70	aldofalivene	Oil	10	Jul 24th, 2011 04:57 PM
Heavy duty Spectro Primary oil	awall	Softail Models	6	Jun 22nd, 2011 08:02 PM
If you were choosing HD Formula + or SPECTRO HEAVY DUTY PRIMARY CHAINCASE OIL in the Primary	Haywire	Oil	21	Oct 25th, 2009 04:57 PM
spectro in XL primary/trans	67hat34c	Oil	1	Mar 12th, 2009 10:43 PM