.
Using Mobil1 V-Twin in Gearbox
Thread Starter
|
Cruiser
Joined: Oct 2007
Posts: 243
Likes: 2
From:
Using Mobil1 V-Twin in Gearbox
Howdy All,
I know this topic has already been done many times over but please bear with me.
Lots of forums/riders and workshops recommend using Mobil1 V-Twin in all 3 holes. Even Harley recommend using their Syn3 in all 3 holes.
I am not convinced so would ike to hear from anyone who has used Mobil1 V-Twin in their gearbox and their opinion. Has anyone had any problems?
I also believe that viscosity rating of the gearbox oil isn't directly comparable to viscocity rating of the engine Oil. Thus 75w90 comparable to 10W30 engine oil. Is this correct?
Cheers
Vlad
I know this topic has already been done many times over but please bear with me.
Lots of forums/riders and workshops recommend using Mobil1 V-Twin in all 3 holes. Even Harley recommend using their Syn3 in all 3 holes.
I am not convinced so would ike to hear from anyone who has used Mobil1 V-Twin in their gearbox and their opinion. Has anyone had any problems?
I also believe that viscosity rating of the gearbox oil isn't directly comparable to viscocity rating of the engine Oil. Thus 75w90 comparable to 10W30 engine oil. Is this correct?
Cheers
Vlad
Cruiser
Joined: Nov 2009
Posts: 139
Likes: 1
From: Southern California
You can definitely use it (Mobil 1) in all three holes, but there are other better alternatives. For your transmission, you can't go wrong with "Redline V-Twin with Shockproof." I had a problem getting my bike into neutral once it reached operating temperature. Several people in this forum suggested that I try Redline trans fluid and I'm glad I did. Finding neutral is way easier now. Redline is also the oil that Baker recommends for their after market transmissions.
Tourer
Joined: Oct 2009
Posts: 417
Likes: 1
From: Spartanburg, South Carolina
I have also been using HD Syn 3 in all three holes. Been doing a lot of reading and research and this is the conclusion I've come to. Lots of folks use Mobil 1 or Amsoil Synthetic oil in the engine, apparently you can use conventional oil in the primary (synthetic won't hurt, just cost more) and a good sythetic gear oil in the trans. Lots use Amsoil Sever gear or Redline Heavy Shockproof gear oil.
I'm now using Mobil 1 20w50 synthetic in my engine, Redline Heavy Shockproof gear oil in the trans and Redline Primary oil in the primary.
Steve
I'm now using Mobil 1 20w50 synthetic in my engine, Redline Heavy Shockproof gear oil in the trans and Redline Primary oil in the primary.
Steve
Last edited by Heritage632; Jan 12, 2010 at 12:28 AM.
Club Member
Joined: May 2007
Posts: 145,895
Likes: 821
From: 40 miles Northeast of Indy..
here the poll results that was taken in here..
Tranny
https://www.hdforums.com/forum/oil-a...o-you-use.html
primary
https://www.hdforums.com/forum/oil-a...ur-choice.html
motor
https://www.hdforums.com/forum/oil-a...your-bike.html
Tranny
https://www.hdforums.com/forum/oil-a...o-you-use.html
primary
https://www.hdforums.com/forum/oil-a...ur-choice.html
motor
https://www.hdforums.com/forum/oil-a...your-bike.html
Seasoned HDF Member
Joined: Oct 2006
Posts: 5,977
Likes: 85
From: Nevada
I've used Red Line and Amsoil synthetic gear oils. Both are excellent and in particular helped shifting to nuetral.
Trending Topics
Ultimate HDF Member
Joined: Oct 2007
Posts: 5,257
Likes: 6
From: Leander Texas
from what i understand the 75W90 gear oil, which is actually of equivalent viscosity to a 10W40 motor oil
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Road Master
Joined: Oct 2009
Posts: 1,178
Likes: 6
From: N.C.
I use 85-140W by drag specilties in the trans. I had the syn3 20/50 in it and it whined a little in 5th gear. I switched it out and the trans is as quiet as can be. I use a different oil in each whole. Syn3 20/50 in engine, Drag specilties 85-140W in trans, Primary Oil for Big Twins in the Primary. I would'nt run the same oil in all the same holes in my car or truck so why should I do the same on my bike?
Last edited by Rockyriver; Jan 12, 2010 at 10:08 AM.
