Why would you consider the best grease for U joints? Suppose you go out for a long drive, and in the meantime, you hear an awful squeaking noise from your car’s drivetrain. In that case, you might stop there and try to find out where the real problem is!
One of the common causes of this metallic grinding sound is universal joints failure. The U joints or universal coupling is an essential component of the driveline system, seated at each shaft edge.
That enables the driveshaft to hold a suitable angle while moving upward and downward with the car’s suspension action.
The rotating joints deliver a powerful torque from the engine while driving over an uneven surface, pothole, rutted road, and bumps. And that is passed through the driveshaft to the wheel drive mechanism.
So if the coupling joint fails due to improper greasing, the driveshafts can break down and affect the vehicle’s movement. That’s where the U joints come into the scenario.
But which lube should you choose? That being said, using a faulty lubricant can burn the trunnions. So to help you make the right decision, we’ve enlisted our top seven lubes for the universal joint. You’ll also get to know what makes them different from the competitive brands.
Let’s dive into the list and see which one would best meet your needs!
If you want to know about long-lasting grease in the current marketplace, we’ll say the Lucas Oil 10301 Heavy Duty lube. This best U joint grease is designed to serve a broad range of greasing functions, from automotive to agriculture to the industrial sector.
Besides, you can stay assured when greasing the heavy-duty joints since it comes with NLGI 2 consistency scale.
What people love the most about Lucas lube is that it can fully recover after being overheated. What’s more, this grease can last four times higher than the traditional lithium lubricant.
In addition, the Lucas is provided with an ultra pressure additive stock, giving some excellent characteristics, including waterproof, great drop point, and thermal stability.
What Sets This Apart
- Made up of polyurea thickener that gives excellent life expectancy
- Designed to lubing heavy-load bearings
- Survive four times more than the conventional grease
- Come with special extreme pressure features
The best feature about Lucas Grease is that it provides exceptional heat stability, making it well-suited for steel mills. You can even use this lubricant in off-road vehicles and commercial applications.
Bearings that are tough to lubricate during periodical maintenance, Lucas heavy-duty oil comes in several packaging forms to fit the most demands.
With a reputable manufacturing history founded in the USA over many years, the Red Line Corporation formulates total synthetic lubricants and advanced additives using their premium base stock.
The Red Line 80402 synthetic grease is an excellent choice while lubricating high-speed wheel bearings and constant velocity joints. Plus, the effects of Red Line grease remain longer. And this is why they’re great for heavy-duty uses.
This multi-purpose oil has unique applications in the automobile, agriculture, and on-road equipment. It can withstand high pressure and temperature, prolonging the bearing life from 200% to 800%.
While some conventional lubricant uses black moly component, the Red Line CV-2 comes with supreme red moly additive. This additive is compatible with the calcium base grease, lithium, and lithium complex. You'll have better fluctuating protection due to its extreme pressure and anti-tear stocks.
What Sets This Apart
- Uses premium ester base package that provides good stability
- Temperature ranges within -100° F to 500° F
- Minimizes oil separation, evaporation, and friction
- Red moly additive is much better than black moly
Finding an ideal lubricant that can work well in multiple places is not an easy task. The Red Line Synthetic base can be used on ball joints, wheel bearing, constant velocity, tie rod end, and even snow removal apparatus.
In addition to many warm temperature applications, it provides excellent performance in cold weather.
While it comes to choosing a simple grease for usual purposes, you can’t get any better than the Valvoline Amber. This lube is formulated to use in automotive and industrial parts. For automobiles loaded with non-disc bearings, this is a perfect fluid for wheel bearings and chassis.
You’ll always get the highest water protection while greasing the joint fittings. That works in extended temperature coverage, from -10° F to 400° F.
Besides, this lithium base grease is compatible with other lubricants, allowing you to use it with other lubes. Yet the product comes in a sticky texture, so heavy water flow can’t make it thin. In a nutshell, this one is convenient stuff to keep in your carport.
What Sets This Apart
- Excellent consistency that ensures lasting service
- A great performer for general greasing jobs
- Resistance to wash-out
- Reduction of wear, friction, and rust
The Valvoline base is formulated to serve the best performance for those who want something convenient for light-duty applications.
So, if you need a lubricant for your high-load joint, this is not your thing. Instead, check out other options on the list to get your grease for load-carrying joints.
4. Quicksilver 8M0071841 High-Performance Extreme Grease
With the goal of manufacturing products tailored to almost all marine engines, the Quicksilver company always maintains an excellent balance between performance, safety, and peace of mind.
The Quicksilver grease is made of a high-quality PTFE polymer, making it an ultra-versatile lubricant. Besides, this calcium sulfonate-based lube won’t degrade while exposed to the water.
You can use this on U joint, chassis, ball joint, disc brake, throttle cable, and so much more. Not only these, but the lubricant also has some great functions in auto, boat, snowmobile, ATV, utility trailer, and more. Overall, it’s the best grease for universal joints while lubing the marine bearings.
What Sets This Apart
- Designed to apply to multiple types of equipment
- Ultra-premium quality PTFE
- Suitable for marine vehicle
- Extends the service life
If you’re looking for a good lubricant for your snowmobile, boat trailer, or other marine vehicles, you can add the Quicksilver product to your list of favorites. It doesn’t drip and create a mess of your boat or truck. And this performs so well in the saltwater environment.
5. Mobil 1 Synthetic Grease
In the automotive industry, Mobil is the most trustable brand that manufactures its products with a dedication to improving vehicle performance. This lube protects hardworking vehicle parts from absolute temperature, ranging from -40° F to 302° F.
Besides, the Mobil 1 Synthetic oil comes with a good dropping point thanks to its combination of lithium complex additive and synthetic based fluid.
The base fluid used in Mobil gives outstanding performance and structural stability, no matter what you’ll need to do the job at high and low temperatures.
If your lubricant loses a substantial amount of ingredients from the oil composition, the viscosity of this lube can change.
As it can minimize the process of evaporation, so you don’t need to worry about consistency at high heat. It’s an excellent deal to lubricate revolute joints, bearings, and other parts.
What Sets This Apart
- Superior pressure properties
- Resistance to corrosion increases bearing life
- Broad temperature coverage ranges from -40 to 302° F
- High resistance to the water stream due to additive package
Summing up, the Mobil 1 Synthetic Grease is a high-performance joint kit for its excellent structural stability. At the same time, it resists evaporation and maintains a perfect viscosity. The ultimate pressure properties protect the liquid from rust and corrosion.
6. Grease-U-Joint, Premium Moly
The Grease-U-Joint is a high molybdenum lubricant formulated for the great shock and extreme pressure parts. This formulation is used in the conditions where sliding action occurs.
The best aspect of this kind of lubricant is its additional protection against friction and wear.
This is the best grease for drive shaft you can see in the market. Manufacturers suggest using the grease-U-joint in any rubbing or sliding surfaces, including roller chain, chassis bearing, rotating shaft, trunnions, etc.
Besides, this one is perfect for general uses in farms, shops, or homes. An excellent adherence of this lube helps to keep it in position while giving protection against water and rust.
What Sets This Apart
- Exceptionally water resistant
- Provides the best result if it’s added every 500 miles or 50 hours
- Molybdenum package prevents shock-load in rotary joint functions
- Extreme shear stability
A premium moly grease is recommended to apply on heavy-load or extreme pressure metal parts. Lubricate the ball joints or U joints where gliding motion is confronted!
7. Mystik 665005002901 Hi-Temp Grease
Mystik Hi-Temp Oil can be the best option if you need a reliable lubricant for heavy-loaded industry, mining, or construction jobs. This one is a lithium complex grease that integrates high-heat dropping point and low-heat pump ability.
From tractors to lawnmowers to race cars, you can apply it to all types of equipment. You can also utilize the product for any task requiring lubrication.
With a 550° F temperature, this is pretty resistant to high heat. Thus, you don’t need to be concerned about the impairment of any parts in the meantime of the job. At the same time, there’s no sweating to the lube during underwater applications since it’s wash-out proof.
What Sets This Apart
- Corrosion and rust protection
- Can hold out against the severe impact
- Great shear stability
- Superb protection in heavy load carrying functions
Getting a versatile lubricant is a wise decision if you need something for indoors and outdoors applications. This grease from the Mystik brand performs well for almost all components, whether greasing small vehicles or large industrial equipment.
Things to Consider Before Buying Grease for U Joints
If one wants to experience smooth drivability, there’s no better way than to include lubricating the universal couplings in the regular maintenance list.
However, when you intend to purchase a specific U joint grease, you need to evaluate some crucial features of this lubricant.
The viscosity of a lubricant defines the calculation of the internal friction in a fluid. According to the NLGI viscosity scale, lubricants are valued from 000 to 6. For the best outcome, you shouldn’t have a large or small scale. It gives the best performance at an ideal viscosity level.
When it comes to greasing the universal connection of an automobile, it would be better to go for a lubricant with the 1 to 2 viscosity scale. That means this stuff is not too firm but soft, like tomato paste or peanut butter.
Resistance of water is another inevitable feature you should appraise. Based on the composition of the fluid, it can either resist water or absorb it.
When the lube absorbs the water, it can result in corrosion that degrades the grease quality. So, you should check the oil composition of your chosen lubricant.
There should be a protective layer that allows the lube to remain in position in the water availability while giving rust protection.
That is because of the oil used in the grease. If your selected product doesn’t have a waterproof feature, you should better look for another option.
The temperature stability of a lubricant refers to its ability to avert degradation due to high temperatures. Therefore, it would be best if you consider how well the lube tackles the high temperature.
If the fluid can’t hold heat, it’ll cause overheat, leading to the impairment of oil film and eventually oxidation. On the other side, the best lube that uses synthetic-based lubricant will produce excellent stability, whether it’s high or low temperature.
Most models come with a label that shows the ultimate pressure the products can confront. It’s better to have a joint grease with the ability to withstand high pressure.
An extreme pressure lube is perfect for all general greasing applications, such as chassis grease, plain bearing grease, agricultural equipment lubrication, industrial plant lubrication, much more!
That is the ability of a lubricant to impede a chemical reaction with oxygen radicals. If you end up getting inferior lube that produces the sludge, unsolvable gum, and deposit, it increases the dirt accumulation that can break down grease fitting.
Extended exposure to high heat can accelerate oxidation in lubricants. Therefore, you should ensure the oxidation stability of your grease before making a purchase.
The oxidation and corrosion are not different issues. If your base oil can control the oxidation process, the engine parts won’t rust and get torn out.
The grease should have proper thermal stability to resist corrosion and friction in the machine. These are some crucial points to evaluate if you want to avoid the cost of frequent replacement.
Considering the budget is an essential fact if money is a concern for you. So if you’re a thrifty guy who wants something worthwhile, you should research the quality and price before getting this one.
Choose the product that provides the best boom for your bucks, but of course, based on your preference.
What Kind of Grease for U Joints
For universal revolute joints, a premium quality lithium based NLGI grade 2 Extreme Pressure grease is suggested.
National Lubricating Grease Institute has accomplished a standard chart for greasing lubricants, classifying from 000 to 6. That table indicates the measurement of the firmness of oils. The greater the NLGI grade, the tougher the oil solution is.
If you need something for low viscosity jobs, the NLGI scale of 000 to 1 is suitable as it’s simple to pump above long distances.
Most manufacturers recommend NLGI No. 1 and 2 for swivel joints due to the capacity to stay in position above a wider. These kinds of greases are an excellent choice when leakage is an issue.
However, NLGI No. 4 to 6 is usually used in rolling bearings. Since your primary focus relies on lubricating the U joints, it would be best to purchase a lube with NLGI No. 1 or 2. Albeit, we highly recommend you go with NLGI 2 U joint grease, which has the toughness of peanut butter.
Frequently Asked Questions (FAQs)
1. How will you grease universal joints?
To prevent universal coupling from unexpected failure, your maintenance routine should cover greasing those joints. The motto of this lubrication is to maintain a pure layer of greases throughout the needle roller bearings.
That minimizes the friction of a spinning surface, clinking sound, and wear out. If you want to get a smooth-riding environment, it’s sensible to lubricate the shaft joint.
Below you’ll get a stepwise process of how you can polish the universal joints. Here we’ve done the process on the spicer of the Toyota Tacoma –
- Lift your vehicle using a hydraulic jack. Then use cardboard or wood to support the car safely and tract the rear axle.
- Under your car, locate the zerk fitting spot. That is the place where the spherical joint is situated. If you can’t find it properly, turn the shaft smoothly to the way of grease fitting until you get it.
- After that, fill up the liquid into the filling forum using a suitable grease gun. And put it in until the lube comes out from a filling cross.
- You need to follow the same process of rubbing oil on the front U joint axle as you’re lubricating a four-wheel drive train. When you’re done, wipe out extra lubricant using a washed floor cloth.
2. When should you lubricate universal coupling?
If you don’t want to confront engine failure or other mechanical hassles, you must lubricate the joints within 5,000 miles.
Most users prefer to grease joints in each oil replacement. However, if you’re driving on a muddy road or water, lubricate your U joints as soon as possible.
3. Can I ride with bad universal joints?
It’s indeed dangerous to run your car with a faulty spicer. There’s a probability that the Cardan joint can disintegrate at any place. This also can cause impairment to the drive shaft, transmission mechanism, bearing, and brake line.
4. Which are the symptoms of U joint failure?
Some common signs of U joint failure are mentioned in the following –
- Clunking sound or squeaking noise while starting to drive
- Fluid leakage from the transmission line
- Vibration throughout the car while turning ahead with a speed
- The driveshaft can be displaced, resulting in unsteady movement
Now you all know why you should lubricate U joints of your car’s driveline. Having proper grease is crucial if you ought to get an improved service life for your bearings.
Since you’re spending a decent amount of bucks, you should pick a product with all the fundamental features, of course, according to your preference.
If you still can’t make a reasonable choice, we suggest Lucas Oil Heavy Duty Base as the best grease for u joints. However, we believe that our guide will help you reach a favorable verdict!