Harley Davidson Forums

Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

Changing fluids question

Thread Tools
 
Search this Thread
 
Old Apr 30, 2012 | 12:38 PM
Share
  #1  
yzf1999's Avatar
yzf1999
Thread Starter
|
Intermediate
Joined: Apr 2012
Posts: 45
Likes: 0
From: Bloomington, Illinois
Default Changing fluids question
Hi all...I've got a question, I want to change all the fluids in my 08 street glide and I want to use mobile 1 full synthetic v twin 20-50. My question is can I run that oil in the engine, primary, and the transmittion?? Thanks
 
Reply
0
Old Apr 30, 2012 | 01:16 PM
Share
  #2  
TWIN CAM 96's Avatar
TWIN CAM 96
Outstanding HDF Member
Joined: Apr 2011
Posts: 2,555
Likes: 6
From: East of the USS Midway
Default
Originally Posted by yzf1999
Hi all...I've got a question, I want to change all the fluids in my 08 street glide and I want to use mobile 1 full synthetic v twin 20-50. My question is can I run that oil in the engine, primary, and the transmittion?? Thanks
Yes you can run it in all three holes.
 
Reply
0
Old Apr 30, 2012 | 07:47 PM
Share
  #3  
10350's Avatar
10350
Cruiser
Joined: Dec 2010
Posts: 246
Likes: 0
From: Southeast MI
Default
Yes you can use it for all 3. I use synthetic in the engine, but prefer Formula+ in the primary and tranny. I have talked to a few mechanics that all suggested sticking with Formula+.
 
Reply
0
Old Apr 30, 2012 | 08:21 PM
Share
  #4  
dbierman's Avatar
dbierman
Intermediate
Joined: Apr 2012
Posts: 25
Likes: 0
From: West Tennessee
Default
Originally Posted by 10350
Yes you can use it for all 3. I use synthetic in the engine, but prefer Formula+ in the primary and tranny. I have talked to a few mechanics that all suggested sticking with Formula+.
Why did they suggest sticking with the Formula+?
 
Reply
0
Old Apr 30, 2012 | 08:27 PM
Share
  #5  
Bigdave12768's Avatar
Bigdave12768
Tourer
Joined: Jul 2011
Posts: 464
Likes: 0
From: Weymouth MA
Default
I got mobil 1 Vtwin in motor and run Amsiol 75/90 Severe syn in the tranny and Amsoil Super Shift in the Primary. SMOOTH.....
 
Reply
0
Old Apr 30, 2012 | 08:35 PM
Share
  #6  
jackhis's Avatar
jackhis
Road Warrior
Joined: May 2010
Posts: 1,294
Likes: 1
From: South FL
Default
Originally Posted by yzf1999
Hi all...I've got a question, I want to change all the fluids in my 08 street glide and I want to use mobile 1 full synthetic v twin 20-50. My question is can I run that oil in the engine, primary, and the transmittion?? Thanks
I believe you can, but I put Mobile 75W-90 in the transmission, and I have been riding like that for almost 27K miles on my new bike, without any problem.
 
Reply
0
Old Apr 30, 2012 | 09:58 PM
Share
  #7  
rdam's Avatar
rdam
Outstanding HDF Member
Joined: Oct 2006
Posts: 2,263
Likes: 36
From: Georgia Mountains
Default
I run Mobil 1 75W/140 in the tranny. I can justify it for the hot Florida summers and it shifts velvet smooth. V Twin 20/50 in the engine....and usually in the primary because I'm too lazy to try something else.

I don't think 20/50 in the tranny is the best choice.
 
Reply
0

Trending Topics

Old Apr 30, 2012 | 10:06 PM
Share
  #8  
dbell66253's Avatar
dbell66253
Seasoned HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2009
Posts: 5,240
Likes: 10
From: South Florida
Default
As stated in previous post and on the containers, yes you can put it in all three, however you may decide to do differently. There are several threads on this subject, do the research and decide what's right for you.
 
Reply
0
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

Jason Momoa Is Turning Classic Harleys Into PHEVs

 Verdad Gallardo
story-1

Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

 Verdad Gallardo
story-2

6 Weirdest Harley-Davidsons Ever Sold to the Public

 Verdad Gallardo
story-3

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-4

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-5

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-6

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-7

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-8

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-9

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
Old Apr 30, 2012 | 10:18 PM
Share
  #9  
Wassup8687's Avatar
Wassup8687
Club Member
Joined: Jun 2008
Posts: 17,717
Likes: 1
From: NY
Default
Sure can. Makes it easier just having all the same for each hole.
 
Reply
0
Old Apr 30, 2012 | 10:21 PM
Share
  #10  
oldtech's Avatar
oldtech
Cruiser
Joined: Feb 2010
Posts: 186
Likes: 2
From: los angeles
Default Fluids
+1 on Mobil 1 gear oil smoother shifts easier to find neutral
 
Reply
0



Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 04:51 AM.

story-0
Jason Momoa Is Turning Classic Harleys Into PHEVs

Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.

By Verdad Gallardo | 2026-06-10 17:18:58


VIEW MORE
story-1
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.

By Verdad Gallardo | 2026-06-03 18:28:05


VIEW MORE
story-2
6 Weirdest Harley-Davidsons Ever Sold to the Public

Slideshow: From military-inspired singles to scooters and three-wheel utility vehicles, these Harleys took the company far outside its comfort zone.

By Verdad Gallardo | 2026-06-02 18:34:10


VIEW MORE
story-3
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-4
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-5
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-6
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-7
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-8
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-9
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE