AMSOIL 20W-50 Synthetic Oil Change Kit - 5 Qt with Chrome Oil Filter

Product Details

AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil delivers premium protection for Harley-Davidson engines, transmissions, and primary chaincases in one formula, and this oil change kit puts everything you need for a complete service in a single box. Built for the Milwaukee-Eight and Twin Cam platforms found in 2016-and-newer Softail, Touring, and Trike models, it simplifies maintenance while outperforming the factory oil.

Air-cooled V-twin engines run hot. Oil temperatures in a Harley-Davidson Milwaukee-Eight can push well past 300°F during summer riding, stop-and-go traffic, or long highway pulls. That kind of heat breaks down conventional and lower-grade synthetic oils fast, leading to viscosity loss, deposit buildup, and accelerated wear in the engine, transmission, and primary chaincase. A single oil has to survive all three environments simultaneously, and most aren't up to the job.

FIGHTS EXTREME HEAT AND DEPOSIT BUILDUP
During 1,000 miles of dyno testing where oil temperatures reached 300°F and cylinder temperatures hit 421°F, AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil fought piston-ring deposits to prevent sticking and protected against piston scuffing for maximum compression and power. The synthetic base oils resist oxidation at sustained high temperatures, keeping internals clean and reducing the sludge and varnish that rob horsepower over time. A Noack volatility of just 4.2% weight loss (ASTM D5800) confirms the oil resists burn-off and stays in grade.

RESISTS VISCOSITY BREAKDOWN 6X BETTER THAN HARLEY-DAVIDSON SYN3
Shear stability matters in a motorcycle where the engine oil also lubricates the transmission gears and primary chain. AMSOIL 20W-50 V-Twin Oil resists viscosity breakdown 6 times better than Harley-Davidson Screamin' Eagle SYN3 in CEC L45-KRL testing (ASTM D445). When oil thins out from the mechanical shearing of transmission gears, it loses its ability to protect the compensator, transmission gears, and primary chain. Maintaining viscosity under shear means consistent film strength through the entire drain interval, not just the first few hundred miles.

PREVENTS RUST DURING STORAGE AND SHORT RIDES
Most motorcycles spend more time parked than running. Humidity, condensation from temperature swings, and short rides that never fully warm the oil all promote rust inside the engine. Rust on roller bearings, cylinder walls, and cam lobes leads to premature wear, compression loss, and blow-by. AMSOIL 20W-50 V-Twin Oil passes the ASTM D1748 humidity cabinet rust test. Many motorcycle oils don't contain dedicated anti-rust agents. This one does.

WET-CLUTCH COMPATIBLE WITH SMOOTH ENGAGEMENT
Friction modifiers found in automotive oils cause clutch slippage in wet-clutch motorcycles. AMSOIL 20W-50 V-Twin Oil is formulated without friction modifiers and meets JASO MA/MA2 requirements, promoting smooth shifting and positive clutch engagement. A total base number (TBN) of 11.6 helps neutralize acids that degrade clutch material over time, extending clutch life and maintaining consistent feel at the lever.

COMPLETE KIT FOR 2016-AND-NEWER HARLEY-DAVIDSON MODELS
The HDMC oil change kit includes five quarts of AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil (MCV), one chrome AMSOIL Motorcycle Oil Filter (EaOM134C), and one drain-plug O-ring. It covers Softail models (Street Bob, Fat Bob, Low Rider, Heritage Classic, Breakout, Sport Glide, and others from 2018 on), Touring models (Road King, Street Glide, Road Glide, Ultra Limited, Electra Glide, and CVO variants from 2017 on), and Trike models (Freewheeler, Tri Glide Ultra from 2017 on). One kit, one purchase, everything needed for a full synthetic Harley-Davidson oil change.

Specifications and Compatibility
AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil meets JASO MA/MA2, API SL, SH, SG, CG-4, CF, and ISO-L-EMA2. It is suitable for any motorcycle requiring 20W-50 motorcycle oil, including Harley-Davidson and Buell models specifying API CH-4 oil. It is compatible with other synthetic and conventional motor oils, though mixing will reduce the performance benefits and extended drain interval capability. Do not use where API GL-4 or GL-5 gear oil is required. Aftermarket oil additives are not recommended.

Service Life
Use for up to twice the motorcycle manufacturer change interval (miles/hours) or one year, whichever comes first, in engines, transmissions, and primary chaincases. For Big Twin Harley-Davidson transmissions only, follow the Harley-Davidson recommended drain interval for synthetic oil of up to 20,000 miles or one year, whichever comes first. If not using an AMSOIL Motorcycle Oil Filter, change the filter at standard intervals. Racing or modified engines are excluded from extended-drain-interval recommendations. Oil changes are at the owner's discretion.