(10 Pack) 13.7 oz Mobil Polyrex EM Motor Grease - Long-Life Bearings

Our review of the (10 Pack) 13.7 oz Mobil Polyrex EM Motor Grease finds it a practical choice for technicians and maintenance teams who service electric motors and sealed bearings. The single biggest reason to buy is its targeted formulation for electric-motor bearings: the advanced polyurea thickener and high-temperature stability deliver extended service life and quieter operation in noise-sensitive installations. For operators managing fin fans, high-temperature pump bearings, or factory-filled sealed-for-life units, this pack of tubes simplifies storage and application while offering corrosion resistance for mildly marine-exposed environments.

Key Features

• 10 Tubes per Pack: The bulk packaging provides spare tubes for routine maintenance and multiple motors without needing to repurchase frequently.
• Advanced Polyurea Thickener: The formulation improves bearing performance and reduces grease degradation under heat, supporting longer intervals between service.
• High-Temperature Lubrication: Designed for outstanding long-life protection in sealed-for-life applications where sustained heat tolerance matters.
• Corrosion Resistance: Offers protection under mild salt-water wash conditions, useful for coastal plants or light marine exposure.
• Low-Noise Properties: The grease helps minimize bearing noise, making it suitable for applications where audible vibration must be controlled.

Who It's For

Maintenance professionals, plant electricians, and contractors responsible for electric motors and sealed bearing assemblies will appreciate this grease for scheduled servicing and factory refill needs. The 13.7 oz tube size and 10-pack format suit workshops that handle multiple machines or keep a stocked parts cabinet.

It is less relevant for casual DIYers with a single small motor or for applications requiring heavy salt-water submersion or specialty marine greases rated for continuous immersion. For those needs, a grease specified explicitly for continuous marine immersion would be preferable.

Pros & Cons

Pros

• Long-life polyurea formula extends the service interval of electric-motor bearings.
• Low-noise characteristics reduce audible bearing vibration in sensitive installations.
• Good corrosion resistance helps protect bearings under mild salt-water wash conditions.
• Pack of 10 tubes provides convenience and value for facilities with multiple motors.

Cons

• Not intended for continuous heavy marine immersion; choose a marine-specific product for that use.
• Tube format requires manual application and may not suit automated dispensing systems without transfer containers.

Specifications

Product	Mobil Polyrex EM Motor Grease
Pack Quantity	10 tubes
Tube Size	13.7 oz per tube
Thickener Type	Polyurea (advanced formulation)
Primary Use	Electric motor bearings and sealed-for-life applications
Performance Notes	High-temperature lubrication, long-life, low-noise, corrosion resistance

Our Verdict

The (10 Pack) 13.7 oz Mobil Polyrex EM Motor Grease is a sensible buy for maintenance teams and facilities that service multiple electric motors and sealed bearings. Its advanced polyurea thickener, long-life high-temperature performance, and low-noise behavior make it good value for industrial lubrication routines, provided the application is not continuous heavy marine immersion.

Frequently Asked Questions

Can this grease be used on fan and pump bearings?
Yes. It is suitable for electric motor bearings, fin fan bearings, and high-temperature pump bearings in sealed-for-life and similar applications.

Is it safe for mildly salty or coastal environments?
The grease offers excellent corrosion resistance and can handle mild salt-water wash conditions but is not specified for continuous heavy immersion.

Does the pack include tools or dispensers?
No. The product is supplied as ten 13.7 oz tubes; manual application or separate dispensing equipment is required.