Best Lucas Oil Gear Oil in 2026

Complete kit for motorcycles equipped with Evolution, Milwaukee-Eight and Twin-Cam engines*

2007-up H-D motorcycle with the 96-inch and larger Twin Cam engines, users must purchase one extra bottle of Primary Chain Case Oil to meet this engine’s 38 oz (45 oz dry) capacity, compared to the 32 oz wet capacity of a Milwaukee-Eight, Evolution or V-Twin case

Includes 5 quarts of 20W50 Motorcycle Oil, 1 quart of V-Twin Transmission Oil with ShockProof, 1 quart of Primary Chain Case Oil, 1 bottle of Fuel Injection Cleaner for Powersports, a sticker kit, a Red Line Oil embroidered hat and a versatile funnel

42 Percent Better Rating On Fighting Power Robbing Deposits

Superior Engine Protection Vs Conventional And Synthetic Blend Oils

Superior Performance Against Deposits, Wear And Oxidation; Bottle Color: Black

Lower unit gear oil formulated to protect against corrosion and excessive wear

Designed for outboard motor lower unit and sterndrive applications above 75 HP

Extreme pressure synthetic additives protect gears from metal to metal contact

Synthetic blend 15W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown

Ideal for on-highway fleets, construction, and agricultural machinery, and diesel pickup trucks — including high-power vehicles that require resistance to heat and stress

Improves low-temperature flow (compared to conventional 15W-40 oils)

Full synthetic 5W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, oil breakdown, and improves low-temperature flow

Exceptional wear protection for longer life in a wide range of heavy-duty engine applications — from pickup trucks to tractors to semi rigs

Enhanced fuel economy capability of 1.5 percent without compromising engine protection or durability (compared to 15W-40 oils)

Synthetic blend 15W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown

Ideal for on-highway fleets, construction, and agricultural machinery, and diesel pickup trucks — including high-power vehicles that require resistance to heat and stress

Improves low-temperature flow (compared to conventional 15W-40 oils)

PRIMARY CASE OIL - For 1984-to-present V-Twin American motorcycle engines, including Evolution, Twin Cam, and aftermarket engines of similar design

BOOSTS VEHICLE PERFORMANCE - Improves clutch operation while reducing wear and temperature, providing a longer clutch lifespan

PERFORM & PROTECT - This product is for use in the primary chaincase with wet-diaphragm spring clutches. Perfect for Motorcycles, ATVs, and Powersports

GEAR LUBRICANT: GL-4 Multi-Purpose Gear Oil has low pour points and high temp properties to provide lubrication over a wide temp range. Our formula contains anti-rust and anti-wear EP additives to provide corrosion protection in drives and hypoid gears.

MULTI-PURPOSE: Our formula is not corrosive to copper; bronze; or other non-ferrous alloy bearings and bushings.

APPLICATIONS: This multi-purpose oil is suitable in use for auto; truck; and bus standard transmissions; and differentials requiring API/GL-3 and GL-4 oils. Safe for use on yellow metals.

[Protect your Rotary Engines]: Idemitsu Synthetic Motor Oil Premix is designed for high-performance rotary engines; Motor oil lubricant protects apex seals and side seals by reducing deposits to keep fuel injectors clean

[Keep Engine from Clogging]: Racing rotary premix engine oil reduces deposits to preserve your engine's power; Auto oil lube minimizes clogging by reducing friction

[Reducing Long Term Maintenance]: Full synthetic motor oil keeps fuel injectors clean to reduce regular vehicle maintenance; Engine oil synthetic lube coats apex and side seals for longevity and the efficiency of your engine

RED LINE SYNTHETIC GEAR OILS Designed to provide the highest degree of protection and greatest efficiency

Applications include differential oil, final drive oil, gear oil and transfer case fluid

Known formerly as LightWeight Gear Oil - Contains additional friction modifiers for suitability with clutch-type limited slip differentials - for most LSDs, no additional friction modifiers are required

For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.

Slows leaks

Prevents downtime

Maximum gear and clutch protection and performance

Developed specifically to meet the needs of 2-stroke transmissions

You are Purchasing One Liter Bottle.

Full synthetic 5W-30 engine oil made from natural gas, not crude, using Pennzoil's patented gas-to-liquid PurePlus Technology

No other leading motor oil provides better wear protection for your engine (Based on Sequence IVA wear test using SAE 5W-30)

Helps protect engines from loss of power and provides better fuel economy—drive on average an extra 550 miles per year (versus a dirty engine)