When it comes to maintaining your Harley-Davidson motorcycle, one of the most important things you need to do is keep the transmission and primary areas lubricated with the right oil. These areas are responsible for transferring power from the engine to the rear wheel and ensuring smooth shifting, so it's crucial to use the right oil to keep them running smoothly.
Here are five key points you should consider when looking for oil for your Harley transmission and primary:
1. Viscosity: The viscosity of the oil is important for ensuring proper lubrication and smooth shifting. Look for oil with a viscosity rating that matches your Harley's requirements.
2. Compatibility: Make sure the oil you choose is compatible with your Harley's transmission and primary components. Check your owner's manual or consult with a Harley mechanic to ensure compatibility.
3. Brand: Stick with reputable brands that are known for producing high-quality oils. Harley-Davidson-branded oils are usually a safe bet, but there are other brands that also make suitable oils.
4. Synthetic vs. Conventional: You have the option of choosing between synthetic and conventional oils. Synthetic oils usually offer better performance and longer service life, but they can be more expensive.
5. Price: Consider your budget when shopping for oil. While it's important to choose a high-quality oil, you don't want to overspend. Look for oils that offer good value for money.
By keeping these key points in mind, you can find the right oil for your Harley transmission and primary that will keep your motorcycle running smoothly for years to come.
10 Best Oil For Harley Transmission And Primary
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1. Red Line (42904 V-Twin Primary Case Oil – Engine Oil (1 Quart Bottle)
Red Line's 42904 V-Twin Primary Case Oil is a high-performance engine oil designed for use in American-made V-Twin motorcycle engines. This oil is suitable for use in Evolution, Twin Cam, and aftermarket engines of similar design produced from 1984 onwards.
The Red Line V-Twin Primary Case Oil is formulated to improve clutch operation and reduce wear and temperature, ultimately extending the clutch lifespan. As a result, motorcycle riders can enjoy a smoother and more reliable ride.
This product is perfect for motorcycles, ATVs, and powersports vehicles that require a friction-balanced case oil. Red Line's V-Twin Primary Case Oil is designed to work specifically with wet-diaphragm spring clutches found in these vehicles.
Red Line has been a leading manufacturer of high-performance lubricants since 1979. Their products are designed to perform and protect better than any other available on the market. This commitment to quality has made them a trusted name among motorcycle enthusiasts and mechanics alike.
Unlike many synthetic oils that are too slippery for clutch operation, Red Line's V-Twin Primary Case Oil is a balanced oil that limits slip and ensures smoother operation. The result is a better-performing clutch that lasts longer and provides a more enjoyable riding experience.
In summary, the Red Line 42904 V-Twin Primary Case Oil is a high-performance engine oil that improves clutch operation and extends clutch lifespan. It is perfect for use in V-Twin American motorcycle engines, including Evolution, Twin Cam, and aftermarket engines of similar design. Red Line has a long-standing reputation for producing the best-performing lubricants on the market and their V-Twin Primary Case Oil is no exception.
2. Harley Oil Change Kit Funnels For Primary And Transmission/crankcase Fill Compatible With Touring Trike Dyna Softail Evolution
The KIWI MASTER Primary Oil Fill Funnel & Transmission/Crankcase Fill Funnel is a must-have for Harley owners who want to make oil changes a breeze. This reusable funnel is compatible with Harley Oil Change Kits for Touring Trike Dyna Softail Evolution models from 1984-2021, making it a perfect fit for most Harley motorcycles.
The Primary Oil Fill Funnel is designed to snap into the derby cover opening, allowing hands-free filling on specified models. The convenient tab allows you to position the funnel with one hand, and the flat cone shape makes it easy to fill a tight area with no mess or spills. The smooth orange plastic surface is easy to clean after use, ensuring this funnel is ready for your next oil change.
The Transmission/Crankcase Fill Funnel is shaped to fit into tight spaces and is designed to reach even the toughest access points. Its anti-burp design ensures smooth oil flow, and the smooth orange plastic surface is easy to clean after use. With this funnel, you can fill your transmission and crankcase without the mess.
Harley owners will appreciate the ease and convenience that the KIWI MASTER Primary Oil Fill Funnel & Transmission/Crankcase Fill Funnel provides. No more fuss or mess when it comes to adding oil to your primary cavity or filling your transmission and crankcase. This package includes one Primary Oil Fill Funnel and one Transmission/Crankcase Fill Funnel, making it a great value for Harley owners.
KIWI MASTER offers a limited lifetime warranty on their products, ensuring that you can trust in the quality of this funnel. If your product is damaged during delivery or has a confirmed manufacturer defect, the company is available to provide a satisfactory solution to ensure your satisfaction.
In summary, the KIWI MASTER Primary Oil Fill Funnel & Transmission/Crankcase Fill Funnel is an essential tool for Harley owners. Its perfect fit for Harley Oil Change Kits and ease of use make it a must-have for any motorcycle enthusiast. The lifetime warranty provided by KIWI MASTER ensures that you can trust in the quality of this product for years to come.
3. 40-Pack Of O-Ring Replacements For Harley Davidson Drain Plugs.
If you own a Harley Davidson or Buell motorcycle, you know the importance of regular maintenance to keep your ride running smoothly. One important aspect of this maintenance is changing the oil, which requires replacing the O-rings on the transmission clutch and primary drain plugs. The 11105 O-Ring Replacement pack provides you with forty high-quality O-rings to ensure that your oil stays in place and your bike stays in top condition.
Made from Viton, a high-performance synthetic rubber, these O-rings are designed to withstand the high temperatures and pressures of motorcycle engines. This material is resistant to oil, fuel, and other chemicals, making it ideal for use in harsh conditions. Additionally, Viton O-rings have a longer lifespan than traditional rubber O-rings, making them a cost-effective choice for long-term maintenance.
Replacing your O-rings during an oil change is a simple process that can prevent oil leaks and other issues that can arise from worn-out O-rings. Without a tight seal, oil can leak out of the drain plugs and cause damage to other parts of your bike. This can lead to expensive repairs and downtime that can be avoided with regular maintenance.
The 11105 O-Ring Replacement pack includes forty O-rings, giving you enough to replace the O-rings on both your transmission clutch and primary drain plugs. These O-rings are compatible with a wide range of Harley Davidson and Buell models, making them a versatile choice for any owner. With a pack of these O-rings on hand, you'll be prepared for your next oil change and able to keep your bike running smoothly.
In conclusion, the 11105 O-Ring Replacement pack is a must-have for any Harley Davidson or Buell owner. By replacing your O-rings regularly, you can prevent oil leaks and other issues that can lead to costly repairs. With forty high-quality Viton O-rings in each pack, you'll have everything you need to keep your bike in top condition for years to come.
4. Red Line 20w50 Synthetic Oil, V-Twin Transmission Oil, Power Pack
The Red Line 20W50 Synthetic Oil V-Twin Transmission Oil Power Pack is a complete kit designed for motorcycles equipped with Evolution, Milwaukee-Eight, and Twin-Cam engines. This kit 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.
It is important to note that for 2007-up H-D motorcycles with the 96-inch and larger Twin Cam engines, an extra bottle of Primary Chain Case Oil must be purchased 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.
Each kit has been tested for compatibility and includes enough fluids for a complete oil change. However, users must check their vehicle specifications for capacity to ensure against overfilling, as full quarts may provide more product than necessary.
The Red Line 20W50 Synthetic Oil V-Twin Transmission Oil Power Pack is a high-quality product that provides superior protection for motorcycle engines. The 20W50 Motorcycle Oil is specially formulated to provide excellent wear protection and reduce engine deposits, while the V-Twin Transmission Oil with ShockProof ensures smooth shifting and protection against gear wear.
In addition, the Primary Chain Case Oil provides excellent protection for the primary chain, while the Fuel Injection Cleaner for Powersports helps to maintain optimal fuel efficiency and performance. The sticker kit and Red Line Oil embroidered hat are a great addition for motorcycle enthusiasts.
Overall, the Red Line 20W50 Synthetic Oil V-Twin Transmission Oil Power Pack is a comprehensive kit that provides everything needed for a complete oil change. It is an excellent choice for motorcycle owners who want to ensure the best possible protection and performance for their engines.
5. Red Line 42804 V-Twin Transmission Oil With Shockproof, 2 Pack
The Red Line 42804 V-Twin Transmission Oil with Shockproof is a premium quality lubricant designed to improve the performance and longevity of V-twin motorcycle transmissions. This product is available in a 2-pack, with each bottle containing 1 quart of oil.
One of the key benefits of using this transmission oil is that it helps to reduce transmission noise. Many V-twin gearboxes are known to produce a clunking sound during shifting, which can be annoying for riders. The Red Line 42804 V-Twin Transmission Oil with Shockproof is formulated to dampen this noise, resulting in a smoother and quieter ride.
Another important advantage of this transmission oil is its ability to lower temperature. High operating temperatures can cause damage to the transmission and reduce its lifespan. The Red Line 42804 V-Twin Transmission Oil with Shockproof is engineered to reduce temperature, which helps to prevent wear and tear on the transmission components.
This transmission oil also provides a thicker oil film between gear teeth, which helps to prevent metal-to-metal contact and wear. This is especially important for high-performance V-twin motorcycles, which are designed to handle more power and torque than standard motorcycles.
The Red Line 42804 V-Twin Transmission Oil with Shockproof is compatible with all aftermarket versions of V-twin transmissions, including those made by Baker, JIMS, S&S, and others. It is also compatible with all Harley-Davidson transmissions, including those with Milwaukee-Eight engines, Evolution engines, Twin Cam engines, and the latest 6-speed Cruise Drive.
This transmission oil is a full-synthetic formulation that is specifically designed for the latest V-twin motorcycles, UTVs, ATVs, and sportbikes. It has the same fluid as the unique Heavy ShockProof Gear Oil, which is a testament to its high quality and performance.
In summary, the Red Line 42804 V-Twin Transmission Oil with Shockproof is a premium quality lubricant that offers numerous benefits for V-twin motorcycle transmissions. It reduces transmission noise, lowers temperature, provides a thicker oil film between gear teeth, and is compatible with all aftermarket and Harley-Davidson transmissions. It is a must-have product for anyone who wants to improve the performance and longevity of their V-twin motorcycle.
6. Red Line Big Twin 20w50 Power Pack Oil With K&n High Performance Oil Filter (Complete Kit, Chrome Filter)
The Red Line 90226 Big Twin 20w50 Power Pack Oil Package with K&N High Performance Oil Filter is a complete kit designed to meet the needs of all V-Twin motorcycles. This package includes five quarts of 20W50 motorcycle oil, one quart of V-Twin transmission oil with ShockProof, one quart of primary chain case oil, and one bottle of fuel injection cleaner. Additionally, a versatile funnel, sticker kit, and Red Line Oil embroidered hat are included in the package.
Red Line has been in the business of producing high-performance synthetic lubricants for over 40 years. The company is renowned for its quality products, which are formulated to provide maximum protection and performance for all types of engines. The Red Line 90226 Big Twin 20w50 Power Pack Oil Package with K&N High Performance Oil Filter is no exception.
The 20W50 motorcycle oil included in this package is specifically designed for use in V-Twin engines. It is formulated with a high-quality synthetic base oil and advanced additive technology that provides exceptional protection against wear, corrosion, and deposits. The oil also provides excellent thermal stability, which helps to reduce oil consumption and keep the engine running smoothly.
The V-Twin transmission oil included in the package is formulated with Red Line's ShockProof technology. This technology provides excellent protection against gear wear and reduces transmission noise. The primary chain case oil is also formulated with advanced additive technology that provides excellent protection against wear, corrosion, and deposits.
The fuel injection cleaner included in the package is designed to clean the fuel system and improve engine performance. It is formulated with a powerful blend of detergents and additives that help to remove deposits from the fuel injectors, throttle bodies, and intake valves. This cleaner helps to restore lost power and improve fuel economy.
The K&N High Performance Oil Filter that comes with the package is designed to provide superior filtration and flow. It features a synthetic filter media that provides excellent filtration efficiency and is capable of trapping particles as small as 10 microns. The filter also has a high flow rate, which helps to reduce oil pressure drop and increase oil flow to the engine.
In conclusion, the Red Line 90226 Big Twin 20w50 Power Pack Oil Package with K&N High Performance Oil Filter is a complete kit that provides exceptional protection and performance for all V-Twin motorcycles. It includes high-quality synthetic oils, a fuel injection cleaner, a versatile funnel, a sticker kit, and a K&N High Performance Oil Filter. This kit is designed to meet the needs of all V-Twin riders and provide maximum protection and performance for their engines.
7. Maxima Racing 90-129018pc Milwaukee-Eight Synthetic 20w-50 Chrome Filter Complete Oil Change Kit
The Maxima Racing 90-129018PC Milwaukee-Eight Synthetic 20W-50 Chrome Filter Complete Oil Change Kit is a comprehensive and high-quality kit designed for use with all 2017-present Harley Davidson Milwaukee-Eight engines. This kit meets or exceeds all manufacturers' specifications and will not void your new vehicle warranty.
The kit contains 5 quarts of Maxima V-Twin 100% Synthetic 20W-50 Engine Oil, 1 quart of Maxima V-Twin Mineral Transmission 80W-90 Oil, 2 quarts of Maxima V-Twin Mineral Primary Oil, and a Chrome Maxima ProFilter Premium Oil Filter. This combination of oils and filter provides optimal performance and protection for your Harley Davidson Milwaukee-Eight engine.
The Maxima V-Twin 100% Synthetic Engine Oil is an ester-based motorcycle oil that is engineered and approved to be used as a multi-compartment oil for H-D V-Twin engines, transmissions, and primaries. This oil is specifically designed to provide superior protection and performance for Harley Davidson motorcycles.
The Maxima V-Twin Transmission 80W-90 Oil is a high-quality, mineral-based motorcycle gear oil that is recommended for use in 4-, 5-, and 6-speed high-performance gearboxes. This oil is specifically formulated to provide excellent protection and performance for Harley Davidson transmissions.
The Maxima V-Twin Primary Oil is a high-quality, mineral-based motorcycle gear oil that is formulated for high-performance transmissions and primary chaincases. This oil is designed to provide excellent protection and performance for Harley Davidson primary chaincases.
Overall, the Maxima Racing 90-129018PC Milwaukee-Eight Synthetic 20W-50 Chrome Filter Complete Oil Change Kit is an excellent choice for Harley Davidson Milwaukee-Eight engine owners who want to ensure optimal performance and protection for their motorcycle. This kit provides everything you need for a complete oil change and is designed to meet or exceed all manufacturers' specifications.
8. Harley Oil Funnels And Drain Plugs With Drip-Free Filter O-Ring For Sportster And Dyna Models.
The Oil Funnel, Motorcycle Primary Case Oil Funnel, & Crankcase Fill Funnel + Drip Free Oil Filter Funnel O-Ring #11105 Primary Drain Plugs fit for Harley Sporster Dyna is a must-have accessory for any Harley-Davidson motorcycle owner. Made of high-quality ABS plastic, this sturdy and corrosion-resistant funnel kit is reusable and makes it easy to add oil to your motorcycle's primary cavity.
The Crankcase Fill Funnel is a versatile tool that fits most motorcycles and cars. It is designed to make it easy to fill up your transmission with oil without spilling or making a mess. This funnel is perfect for those who want to save time and make the process of adding oil to their motorcycle's transmission as hassle-free as possible.
The Primary Case Oil Funnel is specially designed to prevent spilling oil on your engine when removing the oil filter. The oil catcher funnel slides under the filter and provides access to rotate the filter from its bracket. It fits '99-'00 Evolution 1340, '99-'17 Dyna, '99-17 Softail (except FLSB), '99-'15 Touring, and Trike models (except FLHTCUL, FLHTKL, or '07-'15 Touring or Trike models with Narrow-Profile Outer Primary Cover P/N 25700385 or 25700438).
The Drip Free Oil Filter Funnel is a universal fit for Harley Sportster XL 2004-later, XR 2008-2013, Dyna 1999-2017, Touring 1999-2016, and Trike 2009-2016. It is suitable for most new Harley-Davidson models (except v-bars) and is designed to prevent oil from dripping or spilling during oil changes.
Customer service is a top priority for the manufacturers of this funnel kit. They offer a perfect solution for dissatisfied customers within 24 hours and encourage anyone with doubts or questions to contact them. In conclusion, this Oil Funnel, Motorcycle Primary Case Oil Funnel, & Crankcase Fill Funnel + Drip Free Oil Filter Funnel O-Ring #11105 Primary Drain Plugs fit for Harley Sporster Dyna is an essential accessory for any Harley-Davidson motorcycle owner who wants to make oil changes faster, easier, and more efficient.
9. Lucas Oil 10790 Primary Chaincase Oil – 1 Quart
Lucas Oil 10790 Primary Chaincase Oil is a high-quality lubricant designed for use in motorcycle primary chaincases. It is formulated to provide superior protection and performance, ensuring smooth and reliable operation of your motorcycle's primary drive system.
This chaincase oil is vehicle-specific, meaning it is designed to meet the unique needs of different motorcycle models. It is recommended for use in Harley-Davidson, Triumph, and pre-2013 Indian motorcycles, among others. The Lucas Oil 10790 Primary Chaincase Oil is compatible with both wet and dry clutch systems, making it a versatile option for a range of motorcycle owners.
This product comes in a 1-quart bottle, with package dimensions of 24.13 H x 5.08 L x 12.7 W (centimetres). The package weighs 0.907 kilograms, making it easy to handle and store. The product is made in the United States, ensuring its quality and reliability.
The Lucas Oil 10790 Primary Chaincase Oil is formulated with high-quality base oils and additives, providing excellent protection against wear, corrosion, and oxidation. It also contains special friction modifiers that enhance the performance of the clutch system, ensuring smooth and consistent operation.
This chaincase oil is easy to use, thanks to its convenient pouring spout. Simply pour the oil into the chaincase, following the manufacturer's recommended fill level. The oil is designed to provide long-lasting protection, reducing the need for frequent oil changes.
In summary, the Lucas Oil 10790 Primary Chaincase Oil is an excellent choice for motorcycle owners looking for a high-quality lubricant that provides superior protection and performance. Its vehicle-specific formulation, compatibility with wet and dry clutch systems, and easy-to-use packaging make it a top pick for anyone looking to maintain their motorcycle's primary drive system.
Best Oil For Harley Transmission And Primary FAQs
Are there any specific brands of oil that are recommended for use in Harley-Davidson transmission and primary?
according to the Harley-Davidson owner's manual, specific types of oil are recommended for use in the transmission and primary of Harley-Davidson motorcycles. For the transmission, Harley-Davidson recommends using a 20W50 weight synthetic or petroleum-based oil that meets the API GL-5 specification. For the primary, Harley-Davidson recommends using a 20W50 weight petroleum-based oil that meets the API GL-4 specification. It is important to note that using the correct type of oil is crucial for the proper functioning and longevity of the motorcycle. It is always recommended to consult the owner's manual or a professional mechanic for advice on the best oil for your specific Harley-Davidson model.
How often should oil be changed in the Harley-Davidson transmission and primary?
As per Harley-Davidson's recommendations, the transmission oil should be changed every 10,000 miles, while the primary oil should be changed every 5,000 miles. However, this may vary depending on the type of oil used, the riding conditions, and the bike's age and mileage.
It's important to follow the manufacturer's guidelines to ensure proper lubrication and prevent excessive wear and tear on the transmission and primary components. Regular oil changes also help to remove contaminants and debris that can accumulate in the oil over time.
Additionally, it's a good idea to check the oil levels regularly and top up if necessary. If you notice any unusual sounds or shifting problems, it's best to have a professional mechanic inspect the transmission and primary for any issues that may require servicing or repair.
What are the consequences of using the wrong type of oil in the Harley-Davidson transmission and primary?
Using the wrong type of oil in a Harley-Davidson transmission and primary can have serious consequences. The transmission is responsible for transferring power from the engine to the wheels, and using the wrong oil can result in increased wear and tear on the gears and bearings, leading to premature failure. It may also cause shifting problems and excessive noise.
Similarly, the primary is responsible for transferring power from the engine to the transmission, and using the wrong oil can cause increased wear and tear on the clutch plates and bearings, leading to premature failure. It may also cause clutch slippage and reduced performance.
It is important to use the recommended oil viscosity and type specified by the manufacturer to ensure proper lubrication and optimal performance of the motorcycle. Failure to do so can result in costly repairs and potential safety hazards.
What is the difference between transmission oil and primary oil in a Harley-Davidson motorcycle?
Transmission oil and primary oil are two types of lubricants used in Harley-Davidson motorcycles. The primary oil lubricates the primary chain, clutch, and transmission mainshaft bearings. It is responsible for transferring power from the engine to the transmission. On the other hand, the transmission oil lubricates the gears and bearings in the transmission. It helps to reduce friction and wear, ensuring smooth gear shifting and prolonging the life of the transmission components.
The two types of oils are formulated differently to suit their specific functions. The primary oil is thicker and has more additives to withstand the high loads and temperatures generated in the primary drive. The transmission oil is thinner and has fewer additives to allow for smooth gear changes. It is important to use the correct type of oil in each system to ensure optimal performance and avoid damage to the motorcycle. Regular oil changes are recommended for both primary and transmission oil to maintain their effectiveness.
What type of oil is recommended for Harley-Davidson transmission and primary?
As per Harley-Davidson's recommendations, the best oil for the transmission and primary of their motorcycles is a synthetic oil specifically formulated for V-Twin engines. This type of oil is designed to handle the high temperatures, heavy loads, and high RPMs that are typical of Harley-Davidson bikes. Harley-Davidson offers their own brand of synthetic oil, but there are also other reputable brands available on the market that meet the same specifications, such as Mobil 1, Royal Purple, and AMSOIL.
When choosing oil for the transmission and primary, it is important to follow the manufacturer's recommendations, as using the wrong type of oil can cause damage to the engine and transmission components. Regular oil changes are also essential to keep your Harley-Davidson running smoothly and to prolong the life of your bike. Overall, using a high-quality synthetic oil specifically designed for V-Twin engines will help ensure optimal performance and longevity for your Harley-Davidson motorcycle.