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#3353494 - 04/26/14 12:19 AM Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer?
FenderGuy53 Offline


Registered: 04/24/14
Posts: 9
Loc: NJ
Guys, I am a complete neophyte when it comes to evaluating the characteristics of motorcycle oil, so I defer to the experts here for assistance in choosing a suitable motor oil that not only excels in performance and protection, but also is suitable for use in all three (3) holes of my 2011 HD Street Glide.

I'm a conservative, fair weather rider and I only ride from late April through November, in temps averaging 55-95 degrees.

My owner manual recommends a 20W-50 oil and I would prefer motorcycle specific brands. Also, I'd like to be able to achieve 3000-5000 mile OCI's.

So, whaddayathink? Any good options out there?

Thanks, guys.

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#3353495 - 04/26/14 12:24 AM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
Clevy Offline


Registered: 11/11/10
Posts: 9782
Loc: Saskatoon canada
I'm using rotella conventional 15w-40 in my street bobs engine and primary and shockproof heavy in the tranny
I've got my twin cam built,big bore,head work,cams,propipe,106 big bore and an oil cooler. 107hp/115tq. 100tq at 2300 rpm.
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#3353501 - 04/26/14 12:37 AM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
tomcat27 Offline


Registered: 06/25/09
Posts: 2947
Loc: Midwest
Rotella or amsoil. Many fans of each.
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#3353612 - 04/26/14 07:32 AM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
rossn2 Offline


Registered: 02/24/04
Posts: 383
Loc: Ft Hood Texas area
Did you just buy the bike or have you had a Harley for three years and now wondering what kind of oil to put in it?

Most oil makers have a time requirement on the oils over the mileage. Since you have a short riding period I would be draining the oil and filter you've had in it during the summer prior to storing it. Then in Spring fire it up and run it thru the summer and drain again prior to storing.

SYN3, Amsoil, Mobile V Twin, Valvoline, Redline, Schaffers, Rotella...pick your poison.


Edited by rossn2 (04/26/14 07:33 AM)
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#3353614 - 04/26/14 07:34 AM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
LoneRanger Offline


Registered: 07/02/07
Posts: 2349
Loc: Midwest
Well, you definitely want something on the thick end of the 20W50 range and something you can get anywhere and everywhere. Therefore: Amsoil MCV 20W50 or Mobil 1 V-Twin 20W50.

Amsoil will ship to your doorstep.

Mobil 1 V-Twin is everywhere retail.







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#3353621 - 04/26/14 07:47 AM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
dr2152 Offline


Registered: 02/23/12
Posts: 176
Loc: FL
Mobile 1 15-50 in motor every 5k miles
Walmart 20-50 in primary every 5k miles
Mobile 1 70-9- gear lube in transmission every 10k miles

This is in my 04 and 14 Ultra

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#3353631 - 04/26/14 08:00 AM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: rossn2]
FenderGuy53 Offline


Registered: 04/24/14
Posts: 9
Loc: NJ
I bought my FLHX new in June/2011 and have run the HD360 20W-50 dino oil in it from the start. My dealer only carries the HD synth blend and SYN3 oils now, which are pricey for what they are; it's a good time for me to make a switch.

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#3353659 - 04/26/14 08:31 AM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
BigCahuna Offline


Registered: 09/29/09
Posts: 1765
Loc: Deep in the heart of Jersey
I would recommend Valvoline 20/50 wt for the motor, Rotella 15/40 wt for the primary, and any cheap GL-5 rated gear oil for the trans, Why? Because it will cost less for a years worth of use age. Valvoline mc oil is good stuff, look at the UOA'S. Your primary doesn't need expensive oil to lube the chain and clutch, and while MC oils that say to use them in the trans, only carry a gL-1 rating.Even if you only ride between 2-5k miles a year, this combination will perform their duty of protecting your bike just fine.,,

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#3353753 - 04/26/14 10:37 AM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
RISUPERCREWMAN Offline


Registered: 07/29/08
Posts: 1021
Loc: RHODE ISLAND
You cannot go wrong with Spectro 20-50 V-Twin for the engine, Spectro 6-Speed Syn for the trans, & Spectro HD Primary oil for the primary.
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#3353790 - 04/26/14 11:40 AM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
sm00thpapa Offline


Registered: 07/09/11
Posts: 892
Loc: Spring Hill, FL
Rotella is the best bang for your buck.
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#3353803 - 04/26/14 12:02 PM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
FenderGuy53 Offline


Registered: 04/24/14
Posts: 9
Loc: NJ
How about Mobil 1 15W-50 in all three holes?


Edited by FenderGuy53 (04/26/14 12:03 PM)

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#3353836 - 04/26/14 01:20 PM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
kschachn Offline


Registered: 12/26/05
Posts: 5310
Loc: Upper Midwest
This discussion of the most appropriate lube for all three holes is getting a bit weird smile

Originally Posted By: FenderGuy53
How about Mobil 1 15W-50 in all three holes?
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#3354061 - 04/26/14 06:29 PM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
Brybo86 Offline


Registered: 10/08/11
Posts: 1952
Loc: Chicago, IL
ROFL ^^^
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#3354090 - 04/26/14 07:04 PM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
Ducman Offline


Registered: 03/18/13
Posts: 413
Loc: Australia
I don't know about Mobil's recommendations for your application in all 3 holes.

Harley was recommending their Syn3 back in the day but I'm not certain of that any more.
It's possible the Syn3 is not as good as they originally thought it was.

The only company that actually recommends the same oil for all 3 holes like Harley, is Amsoil with their 20w-50 MCV.

For comparison and to add perspective to the concept.
As alternatives, I think Amsoil also say you can run their 75w-110 or 75w-140 gear oil in the transmission, and the 10w-40 MCF motorcycle oil in the primary.

If it was my bike.
With the best level of protection in mind, I would be inclined to run a gear oil in the transmission of a Harley "Big Twin", even though I believe the MCV is a great oil.
The primary would be a lesser consideration for me, and I would ultimately be inclined to see how the shift feel went, as a guide to see what I'd be happiest with in the long run.

Let us know how you go with your decision?


Edited by Ducman (04/26/14 07:10 PM)

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#3354613 - 04/27/14 12:32 PM Re: Best 20W-50, 3-Hole Oil for Harley V-Twin Tourer? [Re: FenderGuy53]
Propflux01 Offline


Registered: 09/26/02
Posts: 3281
Loc: Arkansastan
Originally Posted By: FenderGuy53

My owner manual recommends a 20W-50 oil and I would prefer motorcycle specific brands. Also, I'd like to be able to achieve 3000-5000 mile OCI's.

So, whaddayathink? Any good options out there?

Thanks, guys.


I Know you say MC specific oil in all 3 holes, but please reconsider using standard 20w-50 oil in the tranny. Use a good gearbox oil instead, and change every two years. engine and primary are not too picky and can use any othe above posted suggestions for oils. your shifting feel and your tranny will thank you.
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