---
product_id: 3589896
title: "Genuine Ford Fluid XL-3 Friction Modifier Additive - 4 oz."
brand: "motorcraft"
price: "HK$203"
currency: HKD
in_stock: true
reviews_count: 13
category: "Motorcraft"
url: https://www.desertcart.hk/products/3589896-genuine-ford-fluid-xl-3-friction-modifier-additive-4-oz
store_origin: HK
region: Hong Kong
---

# OEM recommended formula Reduces gear noise & chatter 4 oz precision dosing Genuine Ford Fluid XL-3 Friction Modifier Additive - 4 oz.

**Brand:** motorcraft
**Price:** HK$203
**Availability:** ✅ In Stock

## Summary

> ⚙️ Drive Quiet, Drive Confident: The Additive Your Differential Deserves

## Quick Answers

- **What is this?** Genuine Ford Fluid XL-3 Friction Modifier Additive - 4 oz. by motorcraft
- **How much does it cost?** HK$203 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/3589896-genuine-ford-fluid-xl-3-friction-modifier-additive-4-oz)

## Best For

- motorcraft enthusiasts

## Why This Product

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

## Key Features

- • **Easy Integration:** Simply add to your gear oil as per your vehicle’s owner guide for hassle-free installation.
- • **Silence Your Ride:** Effectively reduces limited-slip differential chatter and hypoid gear noise for a smoother drive.
- • **Proven Performance:** Highly rated by thousands of users who experience quieter, smoother differentials even after thousands of miles.
- • **Trusted OEM Quality:** Formulated by Motorcraft and recommended by Ford for guaranteed compatibility and reliability.
- • **Precision Engineered:** 4 oz bottle designed for exact dosing to optimize differential performance without waste.

## Overview

Genuine Ford Fluid XL-3 is a 4 oz friction modifier additive specifically formulated for limited-slip differentials to reduce chatter and hypoid gear noise. Trusted by Ford and Motorcraft, it integrates seamlessly with gear oils to enhance drivetrain smoothness and longevity, backed by thousands of positive reviews and OEM recommendations.

## Description

For use on certain limited-slip differentials to reduce chatter and hypoid gear noise levels. Use according to owner guide recommendations.

Review: Great quality - Bought this for a new locking rear. The shop suggested non synthetic 85-95 gear oil and Ford Clutch additive. Locker works great and no noticeable noise or chatter even after 1500 miles.
Review: Well it's good and it's stinky! - I have a 2000 ford E350 ambulance with a 7.3 powerstroke diesel engine. 3 yrs ago I had to have the rear differential clutch pack replaced. I think he replaced the gears as well. He told me it will chatter a bit but would go away. It did chatter a bit but didn't go away. Recently it has gotten worse so I ordered 2x4oz. bottles of this stuff. It came in 2 separate boxes. I did order them alone due to other reviewers' warning about the smell and they weren't kidding. I also ordered a.big fluid syringe to "inject" it into the pumpkin. I have a prosthetic leg and some back issues due to a disc replacement surgery. This makes it hard for me to get under the truck so I took it to my friends shop. He had one of his young guys do the job for me. I won't lie, I also didn't want to touch the stuff. It stinks. Bad. The whole garage smelled of the stuff even still packed in the boxes. I put it in the side compartment of my van to bring it to the shop. I felt bad, the guy got it all over his hands and i.know it's going to be hard to get off. I hope he is allowed to sleep in the house tonight! Anyway by the time I got home the chatter seems to be.gone. I will have to do some serious sharp turns and reversing on an incline to know for sure, but it already is better doing normal driving with normal turns. I put 8 oz. In because that is what I saw as a recommendation for my differential. Anyway it's good stuff but it stinks. I left the syringe and boxes and empty bottles for him to dispose of!!

## Features

- For use on certain limited-slip differentials to reduce chatter and hypoid gear noise levels
- Use according to owner guide recommendations
- Formulated for automotive use
- Added to lubricants to reduce the surface friction of the lubricated parts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000NU5LP6 |
| Best Sellers Rank | #3,687 in Automotive ( See Top 100 in Automotive ) #12 in Engine & Oil Fluid Additives |
| Brand | Motorcraft |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,722) |
| Date First Available | March 4, 2011 |
| Exterior | Painted |
| Is Discontinued By Manufacturer | No |
| Item Weight | 4 ounces |
| Item model number | XL-3 |
| Manufacturer | Rain-X |
| Manufacturer Part Number | XL-3 |
| Model | XL-3 |
| OEM Part Number | 0, XL-3, XL3 |

## Images

![Genuine Ford Fluid XL-3 Friction Modifier Additive - 4 oz. - Image 1](https://m.media-amazon.com/images/I/51GRJTtKa1L.jpg)

## Questions & Answers

**Q: So can I use this if I have a noisy diff but a non limited slip?**
A: No, for a noisy diff I would look at a Lucas oil...after you have checked to make sure the noise isn't being caused by the bad news fairy. Take it to tech and have them check the gears. Or crack it open yourself and look for metal shavings.

**Q: does my 2005 4.6L lincoln town car use this? cant find any info**
A: IF your Town Car has a limited slip differential then this fluid is indeed the proper additive if you are going to be renewing the gear oil in your T C.

**Q: can this be used on my 1997 awd mercury mountaineer**
A: This is used for a clutch type rear end?

**Q: must I change differential oil before adding or can I add to oil already in it?**
A: You could add it to the oil that's already in there but you may need to remove some oil to make room. BTW, Diff oil should be changed at 100K.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great quality
*by M***N on September 9, 2025*

Bought this for a new locking rear. The shop suggested non synthetic 85-95 gear oil and Ford Clutch additive. Locker works great and no noticeable noise or chatter even after 1500 miles.

### ⭐⭐⭐⭐⭐ Well it's good and it's stinky!
*by B***N on September 26, 2024*

I have a 2000 ford E350 ambulance with a 7.3 powerstroke diesel engine. 3 yrs ago I had to have the rear differential clutch pack replaced. I think he replaced the gears as well. He told me it will chatter a bit but would go away. It did chatter a bit but didn't go away. Recently it has gotten worse so I ordered 2x4oz. bottles of this stuff. It came in 2 separate boxes. I did order them alone due to other reviewers' warning about the smell and they weren't kidding. I also ordered a.big fluid syringe to "inject" it into the pumpkin. I have a prosthetic leg and some back issues due to a disc replacement surgery. This makes it hard for me to get under the truck so I took it to my friends shop. He had one of his young guys do the job for me. I won't lie, I also didn't want to touch the stuff. It stinks. Bad. The whole garage smelled of the stuff even still packed in the boxes. I put it in the side compartment of my van to bring it to the shop. I felt bad, the guy got it all over his hands and i.know it's going to be hard to get off. I hope he is allowed to sleep in the house tonight! Anyway by the time I got home the chatter seems to be.gone. I will have to do some serious sharp turns and reversing on an incline to know for sure, but it already is better doing normal driving with normal turns. I put 8 oz. In because that is what I saw as a recommendation for my differential. Anyway it's good stuff but it stinks. I left the syringe and boxes and empty bottles for him to dispose of!!

### ⭐⭐⭐⭐⭐ Always works, JUST DONT GET IT ON YOU OR ANYTHING YOU WANT TO KEEP
*by B***T on October 26, 2025*

Always works for that converter shudder

## Frequently Bought Together

- Genuine Ford Fluid XL-3 Friction Modifier Additive - 4 oz.
- Valvoline FlexFill Advanced Full Synthetic 75W-140 Gear Oil 1 QT Pouch
- Permatex 81182 Gear Oil RTV Gasket Maker, 3 oz (Packaging May Vary)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-28*