Choosing a grease cartridge feels simple until your gun won’t pump, the grease slides off a bearing, or a 500,000 PSI load turns a thin film into a dry spot. A 14 oz cartridge is the standard volume for automotive grease guns, but the real differentiators lie in the NLGI grade, thickener type, extreme-pressure additives, and temperature range.
I’m Amir — the founder and writer behind Four Wheel Ask. I analyze grease formulations, NLGI consistency ratings, moly content, and real-world owner reports across automotive, marine, and industrial applications to separate the products that protect moving parts from those that just leak out.
Whether you are working on a truck’s driveline, a tractor’s pivot pins, or a 3D printer’s linear rails, picking the right 14 oz grease cartridge determines how often you reapply and whether the component lasts through the season.
How To Choose The Best 14 Oz Grease Cartridge
The right grease depends on the load, operating temperature, and environment. Three specifications tell you more than the brand name.
NLGI Consistency Grade
Almost all automotive grease guns accept NLGI #2 cartridges. This grade provides the right balance between staying in the bearing and flowing through the gun. NLGI #1 is softer and works better in long centralized lines, while NLGI #3 is stiffer and resists water washout in wet environments but requires more force to pump.
Extreme Pressure Additives and Moly Content
Greases rated for high loads contain additives such as molybdenum disulfide (moly). A 1% moly content helps with moderate pressure, while 5% moly formulations handle shock loads up to 500,000 PSI. For ball joints, U-joints, and CV joints on heavy-duty trucks, a moly-fortified grease is the standard choice.
Base Oil and Temperature Range
Lithium complex greases handle continuous temperatures around 350°F, while synthetic greases extend the range from -100°F to over 500°F. If you work in cold climates or near brake rotors, a synthetic cartridge pumps at lower temperatures and resists thermal breakdown longer.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| Red Line 80402 | Synthetic | CV joints & wheel bearings | NLGI #2, synthetic, 500°F max | Amazon |
| Schaeffer 02382-029S | Lithium Complex | High-pressure bearings & pins | NLGI #2, 5% moly, 500k PSI | Amazon |
| Mobil 122136 | Lithium Complex | Industrial & heavy equipment | NLGI #2, EP additive | Amazon |
| STAR BRITE 026214 | Lithium | Marine & outdoor applications | NLGI #2, water-resistant, 350°F | Amazon |
| LubriMatic 11315 | Lithium | General purpose & light duty | NLGI #2, medium viscosity | Amazon |
In‑Depth Reviews
1. Red Line 80402 High Performance CV-2 Synthetic Grease
The Red Line 80402 is a fully synthetic NLGI #2 grease fortified with a red moly additive. Its operating range of -100°F to 500°F covers everything from arctic cold starts to brake rotor heat soak, and the synthetic base resists oxidation and oil separation significantly longer than conventional lithium greases.
This cartridge is the top choice for CV joints, high-angle U-joints, and wheel bearings where shear stability matters. The moly additive stays in suspension and does not bleed out when the cartridge sits, a common failure point with cheaper formulations that leak oil inside the gun.
Users report excellent results on Tacoma clutch forks, suspension bushings, and high-speed bearings. The only trade-off is a premium cost per cartridge relative to basic multi-purpose greases, though the extended service interval offsets the initial spend.
What works
- Synthetic base delivers extreme temperature range and low evaporation.
- Moly additive stays suspended and provides strong EP protection.
- Minimal effect on rubber seals in CV boot applications.
What doesn’t
- Red moly can stain light-colored surfaces.
- Higher price per cartridge than conventional options.
2. Schaeffer Manufacturing Co. 02382-029S Ultra Supreme Grease
The Schaeffer Ultra Supreme is a lithium-complex NLGI #2 grease with 5% molybdenum disulfide content. It is rated to withstand pressures up to 500,000 PSI, making it one of the strongest load-bearing cartridges available at this price point. The moly additive creates a tacky film that resists being pounded out, splattered off, or washed away.
This grease retains its consistency across temperature changes and flows well through standard grease guns even in cooler weather. The aluminum complex thickener improves adhesion to vertical surfaces and rotating components, reducing the frequency of relubrication in heavy-use equipment.
Long-term users consistently rebuy this cartridge for tractor pins, ball joints, and heavy machinery. The high moly content can leave a dark residue on hands and components, and the tackiness makes cleanup a bit more effort than a standard chassis grease.
What works
- 5% moly provides extreme load capacity up to 500,000 PSI.
- Tacky film stays in place on high-vibration equipment.
- Pumps well in standard grease guns at lower temperatures.
What doesn’t
- Moly residue is messy on hands and surfaces.
- Overkill for simple hinges or light-duty chassis points.
3. Mobil 122136 EP 2 Grease
The Mobil 122136 EP 2 is an NLGI #2 lithium-complex grease formulated with extreme-pressure additives for industrial and automotive use. It is not a high-moly grease, so it is best suited for applications where a general EP rating is sufficient—such as chassis points, bearings, and universal joints on light to medium-duty trucks.
This cartridge is valued for its consistency and predictable performance across a wide range of temperatures. The lithium complex base resists water washout and corrosion, while the EP additives protect against scuffing under moderate shock loads. It works efficiently in both manual and pneumatic grease guns.
Users on Toyota Tundra drivelines and Voron 3D printer linear rails report good results, though some note it is thinner than heavy-duty truck greases. If you need a versatile EP grease that does not cost a premium, this is a solid default choice.
What works
- Reliable EP protection for chassis and bearings.
- Good water resistance and corrosion protection.
- Works in both automotive and industrial equipment.
What doesn’t
- Thinner consistency than high-moly or synthetic greases.
- Not designed for extreme pressure above 200,000 PSI.
4. STAR BRITE Heavy-Duty White Lithium Grease 026214
The STAR BRITE 026214 is a white lithium NLGI #2 grease formulated for marine, auto, and industrial use. White lithium is softer than moly-rich greases but provides excellent corrosion and rust barriers in wet environments. It withstands high temperatures up to 350°F and remains effective in rain, pressure washing, and saltwater spray.
The white color is a practical advantage: it allows visual inspection of the grease on bearings, gears, and bushings, and it will not leave dark stains on clothing, RV components, or trailer hitches. The cartridge fits standard grease guns and pairs directly with STAR BRITE’s pistol grip gun for quick application.
Users praise this grease for lifted 4×4 upper control arms, camper hardware, and boat trailer bearings where black grease would create a mess. The trade-off is that white lithium lacks the extreme-pressure load capacity of moly-based greases, so it is not recommended for high-shock driveline components.
What works
- White color allows visual inspection and stays clean on surfaces.
- Excellent water resistance for marine and outdoor applications.
- Works well on plastic and metal components without staining.
What doesn’t
- Lower EP rating than moly-fortified greases.
- Not ideal for high-load U-joints or heavy truck ball joints.
5. LubriMatic 11315 Multi-Purpose Grease
The LubriMatic 11315 is a basic lithium-based NLGI #2 multi-purpose grease in the standard 14 oz cartridge format. It is designed for light to moderate duty: trailer hitch balls, garage door tracks, lawn mower spindles, and general household fittings where the load is low and the environment is relatively clean.
This cartridge is among the most affordable on the market, making it an entry-level option for casual users who only grease a few fittings per year. The medium viscosity pumps easily through manual grease guns, and the compact 14 oz size is sufficient for small projects without leaving a half-used tube to dry out.
The limitation is that this grease lacks extreme-pressure additives and synthetic base oils, so it breaks down faster under high heat or heavy load. Users who push it in high-speed bearings or winter conditions often upgrade to an EP or synthetic grease. For simple jobs, this cartridge gets the job done without wasting money.
What works
- Lowest entry cost for occasional light-duty greasing.
- Medium viscosity pumps easily through most grease guns.
- Sufficient for trailer hitches, hinges, and lawn equipment.
What doesn’t
- No EP or moly additives for high-pressure applications.
- Not recommended for high-speed bearings or extreme temperatures.
Hardware & Specs Guide
NLGI Grade #2
NLGI #2 is the most common consistency grade for automotive grease guns. It is thick enough to stay in a bearing cavity but soft enough to pump through a standard coupler. Most 14 oz cartridges on the market are NLGI #2, and deviating to #1 or #3 changes flow behavior and load retention.
Molybdenum Disulfide (Moly)
Moly is a solid-film lubricant added to grease for extreme-pressure applications. A 1% moly content handles moderate loads, while 5% formulations provide protection up to 500,000 PSI. The trade-off is that moly leaves a dark, tacky residue that is harder to wipe clean.
Synthetic vs. Lithium Complex Base
Synthetic greases (PAO or ester-based) offer wider temperature ranges from -100°F to over 500°F and resist oxidation longer. Lithium complex greases handle up to 350°F with good water resistance and lower cost. For cold-weather pumping or high-heat applications, synthetic is the better choice.
Cartridge Dimensions
Standard 14 oz grease cartridges measure roughly 2.1 inches in diameter and 9.3 inches in length. This size fits all standard manual, pneumatic, and battery-powered grease guns without adapters. Always verify cartridge compatibility if you use an older or specialized gun.
FAQ
Can I use a 14 oz grease cartridge in any grease gun?
What does NLGI #2 mean for grease consistency?
Is white lithium grease as strong as moly grease?
Final Thoughts: The Verdict
For most buyers, the 14 oz grease cartridge winner is the Red Line 80402 because its synthetic base handles extreme temperatures from -100°F to 500°F and the red moly additive protects CV joints and wheel bearings under high loads without bleeding out. If you need a heavy-duty cartridge for tractor pins and high-pressure bearings, grab the Schaeffer Ultra Supreme with 5% moly and a 500,000 PSI rating. And for marine or outdoor applications where water resistance and clean inspection matter, nothing beats the STAR BRITE White Lithium.
Certification: BSc in Mechanical Engineering
Education: Mechanical engineer
Lives In: 539 W Commerce St, Dallas, TX 75208, USA
Md Amir is an auto mechanic student and writer with over half a decade of experience in the automotive field. He has worked with top automotive brands such as Lexus, Quantum, and also owns two automotive blogs autocarneed.com and taxiwiz.com.