V-Twin Engine Oil Guide
THE
RIGHT
OIL FOR
YOUR
V-TWIN.
Synthetic oil recommendations for Harley-Davidson and V-twin engines — matched to your exact motor.
6
Categories
20+
Engines
3
Fills Covered
Engine Families
SELECT YOUR PLATFORM
Every V-twin has unique oiling requirements. Choose your engine family for model-specific synthetic oil recommendations.
Available Now
Harley-Davidson
Most popular V-twin platform
Milwaukee-Eight
Twin Cam
+ More
Coming Soon
Metric Cruiser
Honda · Yamaha · Kawasaki · Suzuki
Coming Soon
Indian
PowerPlus · Thunderstroke · Chief
Coming Soon
Ducati
Desmodromic · L-twin
Coming Soon
Sport V-Twin
RC8 · Aprilia · KTM · TL1000
Coming Soon
Chopper / Custom
S&S · RevTech · Custom Builds
Milwaukee-Eight · 2017–Present
107/114
117/131
117/131
CID Variants
20W-50
Viscosity
3
Fluid Fills
Featured Engine
MILWAUKEE-
EIGHT
Harley's current flagship since 2017. Four valves per cylinder, precision oil cooling, and three separate fluid fills — the right synthetic oil in each location makes a real difference.
- Engine: 20W-50 Full Synthetic
- Primary: Dedicated Primary Fluid
- Transmission: Synthetic Transmission Fluid
- Covers 107, 114, 117, and 131 CID variants
Why Synthetic
BUILT FOR V-TWINS
Engine-Specific
Matched to your exact V-twin displacement and year — not generic motorcycle oil.
Superior Protection
Synthetic formulas built for shear stability and heat resistance in air-cooled V-twins.
Three Fills Covered
Engine, primary, and transmission — we spec all three so you don't have to guess.