Best Wheel Bearing Greases: Maintain the Mechanical Stability of Your Wheel Bearings
Give your wheel bearings a longer working life, and improve their tolerance to high temperatures
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If you own an RV or a trailer and take it on frequent trips, then you need to lubricate the wheel bearings to improve the performance of the wheels. A good grease guarantees that the bearings remain undamaged and protects the metal from water and heat. It also extends the life of the bearings. Take a look into some of the best wheel bearing greases on the market.
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Benefits of Wheel Bearing Grease
- Stabilize the bearing's structure. The bearings play a vital role in attaching the wheels to your vehicle and facilitating wheel rotation. For that reason, their structural integrity is vital for safety, and it can be stabilized by grease or lubricants. The bearings can endure different roles and become more reliable.
- Reduce friction. The grease reduces friction between the bearings and adjacent components (axle and spindle). The heat generated from friction can also lead to wheel bearing failure, which means your vehicle won't move. Friction also causes the deterioration of the seals, balls, or raceways.
- Easily rotate your wheels. Greasing your bearing helps to reduce friction in your wheels, and they can rotate with ease. The bearings will rotate smoothly even as they bear the weight of the vehicle and endure high-pressure and powerful forces at high speeds.
- Keep the bearings in good condition. Grease lubricates and protects the bearings from wear and corrosion. Also, some bearings have a seal that locks in the grease and keeps out water and other contaminants to prolong its life.
Types of Wheel Bearing Grease
Ion-based grease may come in the form of lithium, white lithium, and calcium. Calcium-based grease has high water resistance but only moderate heat resistance. Lithium-based grease is water resistant and has a high tolerance for extreme temperatures. Lastly, white lithium grease is a multipurpose grease that resists corrosion and repels water.
Moly EP Grease
Moly EP grease is formulated using a molybdenum disulfide, which is a compound that's highly resistant to corrosion and has a high melting point. Moly EP grease can withstand extreme pressure, as the EP on the name suggests. It's suitable for any object with a gliding motion, including ball joints and U-joints.
Disc and Drum Bearing Grease
Disc and drum grease is water resistant and can be used on disk and drum brakes. It can withstand extremely high temperatures generated from the high speeds of the wheel and the pressure from the brakes. It's a recommended wheel bearing lubricant for RVs. It also works great as a lubricant for general purpose equipment.
Marine Wheel Bearing Grease
Marine wheel grease is ideal for marine equipment due to its water and salt resistance. It’s recommended for metals with heavy loads or farm equipment to facilitate sliding movements. It can also be used on motorcycle chains, swivel hinges, steering cables, anchor chains, and winches.
Sta-Lube traces its roots back to 1933 with the production of additives and lubricants for vehicles. Its products are tailored to meet consumer demands and are designed for both the DIY user and professional technicians. In addition, the prices of its products are budget friendly. One of its high-quality disk-brake bearing greases is the Sta-Lube Heavy-Duty Bearing Grease.
Royal Purple is a North American motor oil company that manufactures high-end products that meet most of the needs of the automotive industry. Its superb performance makes Royal Purple greases, lubricants, and oils the go-to products for many automakers and car owners. Calumet Specialty Product Partners (CLMT) runs the company. Royal Purple’s best grease for ball bearings is the Royal Purple Multi-Purpose Synthetic Grease.
Lucas Oils is a manufacturer and distributor of lubricants, oils, and automotive additives. The company is headquartered in Corona, Calif. Forrest Lucas and his wife started the company in 1989. Lucas has a large fanbase due to the longevity and high-performance of its car care products. One of its best high-temperature greases is the Lucas X-Tra Heavy-Duty Grease.
Best Wheel Bearing Grease Pricing
- Under $30: Some of the best chassis, trailer axle, and wheel bearing greases are found within this price range. The greases mostly come in 14-ounce bottles or 3.5-ounce tubes. You typically have to purchase a pistol grease gun separately with most of the products here.
- Over $30: At this price, the greases simply come in larger cans or in sets of six or more tubes. Also, expect to find some of the best marine wheel bearing greases that sport the highest level of water resistance. Some multipurpose greases come with their own piston guns for easy application.
The grease should form a protective film that keeps out water from the surface being covered. The protective film is formed by the oil used in making the grease. This feature makes your bearings last longer due to rust and corrosion prevention.
Viscosity is the rate of internal friction within a fluid that enables it to resist flow. Different types of grease are rated at a viscosity ranging from zero to 6. The ideal rate for a wheel bearing grease is two, which feels a lot like soft peanut butter.
- Temperature Tolerance: The best grease should remain stable even at high temperatures. Lithium-based greases have the highest temperature tolerance in comparison to calcium- or sodium-based greases.
- Pressure Tolerance: Some greases are formulated to withstand high-pressure conditions, such as an emergency brake on the wheels. Most brands indicate the maximum pressure limit for their products. Moly EP greases have the highest pressure tolerance.
Best Wheel Bearing Grease Reviews & Recommendations 2021
- Some wheels come with completely sealed bearings, meaning you can't add more grease to the unit when you notice a rumbling sound. This often indicates that the bearings are straining. In that case, you would have to buy a new set of bearings.
- Grease certification is an easy way of knowing what type of grease is suitable for your bearings. Greases that are only GC approved are ideal for disk-brake wheel bearings. LB-approved greases are suitable for chassis. GC-LB approved are suitable for all types of wheel bearings and chassis.
- Do not mix different brands or qualities of wheel bearing grease. It may compromise the lubricity and other protective properties. Clean out the old grease with white spirit before you apply the new grease.
- For a grease base, choose a product with an aluminum-complex or a lithium-complex grease base since they have some of the best anti-wear and anti-corrosion capabilities. Do not use copper as a grease base as it forms an electrochemical reaction with the bearing metal. The product of that reaction dissolves in salty water and leads to faster deterioration of the bearings.
Q: Do I have to grease new wheel bearings?
A: It depends on the make of your car. If it has a sealed pre-assembled hub unit, then you don't have to grease them since the new bearings come pre-greased. Sealed bearings are never greased but replaced when they start to wear out. Only grease bearings for vehicles with unsealed locks or hub units.
Q: How will I know that I need to replace my wheel bearings?
A: Just like any other metal component of your vehicle, the bearings will give some telltale signs that they need to be replaced. You may start to hear a rhythmic thumping noise that sounds like a card that's stuck on the spokes of a rotating wheel. The noise gets louder the more the bearings wear out.
Q: What is the ideal dropping point for wheel bearing grease?
A: Dropping point refers to the temperature at which the grease changes from its semi-solid state to a liquid state. Most greases have the recommended dropping point of 500-degrees Fahrenheit. Grease with a low dropping point won't serve its purpose as a lubricant.
Q: How long do wheel bearings last?
A: Depending on the quality of the bearing, they normally last between 85,000 and 100,000 miles. Some premium bearings can be pushed to 150,000 miles. However, you shouldn’t rely on the manufacturer’s advertised lifespan to determine when you should replace your bearings. To be on the safe side, check the condition of the bearings every 30,000 miles.
Our top pick for the best wheel bearing grease is the Royal Purple Multi-Purpose Synthetic Grease. It’s a general-purpose grease with a high-temperature tolerance and water resistance properties. It can be used on boat trailers, motor vehicles, and household appliances.
If you are looking for a budget-friendly product for simple maintenance service for your wheel bearings, then go for the Lucas X-Tra Heavy-Duty Grease. It’s also better than most OEM greases.