---
product_id: 736784578
title: "Mobil Polyrex EM, Motor Grease, 13 oz"
brand: "mobil"
price: "$93.06"
currency: USD
in_stock: true
reviews_count: 5
category: "Mobil"
url: https://www.desertcart.us/products/736784578-mobil-polyrex-em-motor-grease-13-oz
store_origin: US
region: United States of America
---

# Long-lasting grease life High-temp lubrication Superior corrosion protection Mobil Polyrex EM, Motor Grease, 13 oz

**Brand:** mobil
**Price:** $93.06
**Availability:** ✅ In Stock

## Summary

> ⚙️ Mobil Polyrex EM: The secret sauce for motors that never quit!

## Quick Answers

- **What is this?** Mobil Polyrex EM, Motor Grease, 13 oz by mobil
- **How much does it cost?** $93.06 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/736784578-mobil-polyrex-em-motor-grease-13-oz)

## Best For

- mobil enthusiasts

## Why This Product

- Trusted mobil brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Heat? No Sweat!:** Maintains peak performance even under high-temperature conditions, perfect for demanding motor environments.
- • **Rust? Not on Our Watch:** Delivers superior corrosion and rust protection, including mild saltwater resistance for versatile applications.
- • **Endurance that Outlasts:** Extends electric motor bearing life with advanced polyurethane thickener for unmatched durability.
- • **Whisper-Quiet Operation:** Engineered for noise-sensitive bearings, ensuring smooth, silent motor performance that professionals trust.
- • **Trusted by Industry Leaders:** Recommended by top motor manufacturers and engineers for premium lubrication and reliability.

## Overview

Mobil Polyrex EM is a premium 13 oz motor grease specially formulated with an advanced polyurethane thickener to extend the life of electric motor bearings. It offers exceptional high-temperature lubrication, superior corrosion resistance including mild saltwater protection, and low noise characteristics, making it the go-to choice for professionals seeking reliable, long-lasting motor performance.

## Description

Super Premium Mobil Polyrex EM Series Grease is specially formulated for electric motor bearings. Advanced thickener formula and proprietary manufacturing technology improves bearing performance and extends the life of the electric motor.

Review: Works extremely well and 13oz is going to last me a long time. Got it for 9 dollars which is a good deal for me given how long this tube is probably going to last. I did notice an odor once applied but that's to be expected. Recommended by Hismith for their machines.
Review: Mobil Polyrex EM is the recommended lubricant for Baldor's high end "Superior" series motors. I acquired one of these motors, used, for use in a 24" pro wood lathe that I am currently designing. However, it was a used motor and the bearings sounded a bit rough when the motor shaft was spun. This is not a major problem for me. As a mechanical Engineer with a well equipped shop, I have no problem replacing the bearings. But, I wanted to re-lube the bearings to see if that would help them run smoother. After checking with Baldor, I ordered a small cartridge of Mobil Polyrex EM (great price from desertcart). When I received the Mobil Polyrex EM grease and checked it out, I was amazed at it's cohesion and lubricating properties. I re-lubricated the bearings using the Zerk fittings on the motor. When I spun up the motor for just a minute or two the bearings were silent and smooth as silk with no "bearing drag". This is, with out a doubt one of the best greases that I have ever used. I will be using Mobil Polyrex EM for all motors in my shop from now on. Mobil Polyrex EM has my highest recommendation.

## Features

- Outstanding Grease Life: Long life of ball and roller bearings, high temperature lubrication, especially suitable for sealing applications
- Advanced Polyurethane Thickener: When exposed to mechanical shear force, it increases durability compared to conventional polyurethane greases
- Superior Corrosion Protection: Protects against rust and corrosion Provides added protection under mild salt water wash conditions
- Low Noise Characteristics: Suitable for lubrication of ball bearings in many noise sensitive applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B017WKDTSA |
| Amazon Bestseller | #112,718 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #581 in Grease & Grease Guns |
| Brand | Mobil |
| Customer Reviews | 4.6 4.6 out of 5 stars (215) |
| Date First Available | February 18, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Dimensions L x W x H | 23.6 x 5.6 x 5.6 cm |
| Item Weight | 431 g |
| Item model number | 121122 |
| Manufacturer | Mobil |
| Product Dimensions | 23.62 x 5.59 x 5.59 cm; 430.91 g |

## Product Details

- **Brand:** Mobil
- **Item Weight:** 0.95 Pounds
- **Liquid Volume:** 7 Fluid Ounces
- **Material:** grease
- **Package Information:** Tube

## Images

![Mobil Polyrex EM, Motor Grease, 13 oz - Image 1](https://m.media-amazon.com/images/I/61wXSjNxBwL.jpg)
![Mobil Polyrex EM, Motor Grease, 13 oz - Image 2](https://m.media-amazon.com/images/I/612kXQCII3L.jpg)
![Mobil Polyrex EM, Motor Grease, 13 oz - Image 3](https://m.media-amazon.com/images/I/31QuyAQE+BL.jpg)
![Mobil Polyrex EM, Motor Grease, 13 oz - Image 4](https://m.media-amazon.com/images/I/31KHmGguFXL.jpg)

## Questions & Answers

**Q: Hello, Is it can use on motorcycle?**
A: Depends on where you intend to use it. it is basically a ball/roller bearing grease optimized for usage in electric motor bearings. so moderate-light loads and heat, clean environment. Very long life

**Q: So the XHP 223 is a good choice for motorcycle(I search and read the document from internet)?**
A: Yes,  XHP 223 is good for high temps and resistance to water washout

**Q: Or maybe you can recommend else grease can use on motorcycle ?(high temperature, high rpm)**
A: I plan to use it on ball bearings, roller bearings I would probably use a high temp wheel bearing grease

**Q: does this come in the 4 ounce tubes that fit the mini grease gun?**
A: No, standard cartridge only

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by B***. on December 24, 2025*

Works extremely well and 13oz is going to last me a long time. Got it for 9 dollars which is a good deal for me given how long this tube is probably going to last. I did notice an odor once applied but that's to be expected. Recommended by Hismith for their machines.

### ⭐⭐⭐⭐⭐ Review
*by K***K on May 6, 2024*

Mobil Polyrex EM is the recommended lubricant for Baldor's high end "Superior" series motors. I acquired one of these motors, used, for use in a 24" pro wood lathe that I am currently designing. However, it was a used motor and the bearings sounded a bit rough when the motor shaft was spun. This is not a major problem for me. As a mechanical Engineer with a well equipped shop, I have no problem replacing the bearings. But, I wanted to re-lube the bearings to see if that would help them run smoother. After checking with Baldor, I ordered a small cartridge of Mobil Polyrex EM (great price from Amazon). When I received the Mobil Polyrex EM grease and checked it out, I was amazed at it's cohesion and lubricating properties. I re-lubricated the bearings using the Zerk fittings on the motor. When I spun up the motor for just a minute or two the bearings were silent and smooth as silk with no "bearing drag". This is, with out a doubt one of the best greases that I have ever used. I will be using Mobil Polyrex EM for all motors in my shop from now on. Mobil Polyrex EM has my highest recommendation.

### ⭐⭐⭐⭐⭐ Review
*by G***E on October 15, 2025*

Great quality motor lube.

## Frequently Bought Together

- Mobil Polyrex EM, Motor Grease, 13.7 oz.
- LockNLube Heavy-Duty Pistol Grip Grease Gun. Includes our patented LockNLube® Grease Coupler (Locks On, Stays On, Won't Leak!) plus a high-quality 20" hose and in-line hose swivel
- LockNLube Grease Gun Coupler locks onto Zerk fittings. Grease goes in, not on the machine. World's best-selling original locking grease coupler. Rated 10,000 PSI. Long-lasting rebuildable tool.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-23*