Oil for Dyna
Dirt don't hurt
Joined: Jan 2011
Posts: 21,062
Likes: 4,547
From: Haslet Texas
Which oil???
There are 4 different oils used on that bike, Motor, tranny, primary and forks.
You will find that just about everyone has a different opinion on what to use.
Personally I use Valvoline VR1 20w-50 in the motor, Amsoil 75-140 in the tranny, Atf in the primary, and Amsoil hydroshock in the forks.
ps Welcome to the forum
There are 4 different oils used on that bike, Motor, tranny, primary and forks.
You will find that just about everyone has a different opinion on what to use.
Personally I use Valvoline VR1 20w-50 in the motor, Amsoil 75-140 in the tranny, Atf in the primary, and Amsoil hydroshock in the forks.
ps Welcome to the forum
Outstanding HDF Member
Joined: Oct 2016
Posts: 2,530
Likes: 546
From: Wayne County, PA
I agree with td. Except because your in canada it probably wont be texas hot up there, hence i would go 75w-90 in the trans. If your not a fan of auto trans fluid in the primary use a good 10w-40 made for bikes with wet clutches. Good luck and welcome.
Ultimate HDF Member
Joined: May 2006
Posts: 6,590
Likes: 444
From: Ohio
You should be able to get one from ebay or Amazon quicker than that!
Trending Topics
Seasoned HDF Member
Joined: Jun 2010
Posts: 9,324
Likes: 3,869
From: Upstate New York
Ive used HD 20w-50 in the engine for the last 216,000 miles. It seems to work okay. HD Formula + in the primary and Valvoline 85w-140 Gear oil in the transmission.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
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
The Best and Worst Harley-Davidson Moves of 2025
Verdad Gallardo
Advanced
Joined: Nov 2014
Posts: 99
Likes: 16
From: Sweden
This is what I use in my Fat Bob 2013 but there are many other brands.
Red Line 20W60 Motorcycle Oil in engine
https://www.redlineoil.com/20w60-motorcycle-oil
V-Twin Transmission Oil with ShockProof
https://www.redlineoil.com/v-twin-transmission-oil-with-shockproof
V-Twin Primary Case Oil
https://www.redlineoil.com/v-twin-primary-case-oil
Red Line 20W60 Motorcycle Oil in engine
https://www.redlineoil.com/20w60-motorcycle-oil
V-Twin Transmission Oil with ShockProof
https://www.redlineoil.com/v-twin-transmission-oil-with-shockproof
V-Twin Primary Case Oil
https://www.redlineoil.com/v-twin-primary-case-oil
Last edited by Erik Lundberg; May 15, 2018 at 09:17 PM.
Elite HDF Member
Joined: Oct 2005
Posts: 3,872
Likes: 83
From: Canton, Michigan
Use the same, with the exception I recently switched the trans oil to Royal Purple. It's a lot easier to read (old man/old eyes) the level on the dipstick since it's 'purple'.