---
product_id: 8145183
title: "Lubegard 30903 Gear Fluid Supplement, 8 oz."
brand: "lubegard"
price: "€ 22.38"
currency: EUR
in_stock: true
reviews_count: 8
category: "Lubegard"
url: https://www.desertcart.de/products/8145183-lubegard-30903-gear-fluid-supplement-8-oz
store_origin: DE
region: Germany
---

# Reduces friction on gears & bearings Improves cold weather shifting Lowers operating temperature Lubegard 30903 Gear Fluid Supplement, 8 oz.

**Brand:** lubegard
**Price:** € 22.38
**Availability:** ✅ In Stock

## Summary

> ⚙️ Upgrade your gear game — shift smoother, last longer!

## Quick Answers

- **What is this?** Lubegard 30903 Gear Fluid Supplement, 8 oz. by lubegard
- **How much does it cost?** € 22.38 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/8145183-lubegard-30903-gear-fluid-supplement-8-oz)

## Best For

- lubegard enthusiasts

## Why This Product

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

## Key Features

- • **Power Saver:** Minimizes drivetrain power loss to boost efficiency and performance
- • **Friction Fighter:** Reduces wear on hypoid gears and bearings under high stress
- • **Quiet Confidence:** Dampens gear noise and absorbs shock loads for a whisper-quiet ride
- • **Cooler Runs, Longer Life:** Lowers gear fluid temperature to extend transmission lifespan
- • **Smooth Shifts in Any Weather:** Enhances cold start shifting for effortless gear changes

## Overview

Lubegard 30903 Gear Fluid Supplement is a synthetic additive designed to enhance manual transmission and final drive performance by lowering operating temperatures, reducing friction, and improving cold weather shifting. Its advanced LXE technology extends fluid life, reduces drivetrain power loss, and quiets gear noise, making it a must-have for maintaining peak transmission efficiency and durability.

## Description

LUBEGARD GEAR FLUID SUPPLEMENT is designed for use in all manual transmissions, transaxles and final drives that require gear oil. LUBEGARD contains LXE, (liquid wax esters) and their derivatives, a blend of high grade petroleum oil, synthetic base oils and a complete anti-wear formula. LUBEGARD is designed to provide high temperature stability to prevent harmful deposits on synchros and gears. BENEFITS: Reduces drive train power loss, Lowers temperature and extends fluid life, Improves heat transfer from the fluid to the case wall and out the gear box, Improves all cold weather stiffness, Improves all manual & synchromesh transmission shifting characteristics, Reduces tooth drag and absorbs shock loads, thus improves the life of all gear units, Lowers friction on bearings and gears with high wiping stresses, especially hypoid gears, Minimizes oxidation and varnish deposits, Suppresses lubricant foaming, Safe for new MTF Fluids, Increases power transfer, reduces energy consumption and Decreases equipment operating and maintenance costs. DIRECTIONS FOR USE: Add 3 fluid oz. to each quart of gear fluid.

Review: 100% works. Highly recommended. Best $10 I've ever spent. - Replaced the old and neglected gear oil in my '97 Nissan D21 pickup with brand new Redline MT90. Thought it would improve the clunky shifting but it did the opposite. 2nd, 3rd, and 4th started grinding. My theory is that the old fluid had lots of wear particles in it that helped the synchronizers grab. The new synthetic fluid was too slippery and caused my gears to grind unless double clutching and shifting very slowly and deliberately. I added one bottle of Lubegard supplement and I could immediately feel the shifts improve. I still shift slow and carefully, but it's much more forgiving and the synchros grab much better. It feels like a different gear box now. Highly recommended, I will for sure buy more.
Review: Lubegard Gear Supplement - Another update May 2023: I've since used this in so many different vehicles not just by own but families and friends. It has helped on a couple of occasions quiet down a noisy diff, not completely but definitely quieter. And no chattering or noises from any of the Ford differentials I've put it in. Over several years of testing I can honestly say great product! Not sure if I would use it in a highly sensitive manual transmission though as it does reduce friction quite a bit which is a great thing but sometimes not so much in a manual transmission :) Update October 2018: The benefits i had noticed continued in the F250 while i had it (no longer have it) and also used it in a new application: a 2016 Ram 1500. I chose to use Redline 75w140 and this product as directed. The axle performed as i expected; very quiet. There is also LG in the motor and this truck runs beautifully. Average mpg over 24,000 miles is 19.9 combined. Not bad for a Hemi! I've used this product in my Ford F-250 in two different applications; the 4spd manual transmission and the rear axle. Using this product mixed with 80w90 in the manual trans made a considerable difference in shift quality, especially when cold. I also added a bottle in the Dana 70 rear axle w/ limited slip. Used Valvoline 75w140(contains friction modifier) and one bottle of Gear supplment. No problems after 500 miles and the axle is whisper quiet, no chattering. Lubegard isn't the sole reason the axle is quiet, but in my opinion a contributor. The LXE technology Lubegard uses has an amazing effect on reducing friction. I've used Lubegard's products in the engine, auto and manual trans, axles, coolant, and power steering with success in every application. Use this product with confidence.

## Features

- Lowers temperature and extends fluid life
- Improves cold weather stiffness
- Improves all manual and synchromesh transmission shifting characteristics
- Lowers friction on bearings and gears with high wiping stresses, especially hypoid gears
- Reduces drive train power loss

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0007ZDRW6 |
| Best Sellers Rank | #468,638 in Automotive ( See Top 100 in Automotive ) #270 in Gear Oils |
| Brand | Lubegard |
| Customer Reviews | 4.5 4.5 out of 5 stars (60) |
| Date First Available | July 7, 2004 |
| Global Trade Identification Number | 00083137309031 |
| Item Form | Liquid,Oil,Wax |
| Item Weight | 7 ounces |
| Item model number | 30903 |
| Liquid Volume | 10 Fluid Ounces |
| Manufacturer | Lubegard |
| Manufacturer Part Number | 30903 |
| Material | Synthetic |
| Model | Gear Fluid Additive |
| Number of Items | 1 |
| Package Information | Bottle |
| Product Dimensions | 26 x 6.5 x 2.25 inches |
| Recommended Uses For Product | all manual transmissions, transaxles and final drives that require gear oil |
| Specific Uses For Product | manual transmission lubrication, transaxle lubrication, final drive lubrication |
| UPC | 483137309039 083137309031 |
| Unit Count | 8.0 Fluid Ounces |

## Product Details

- **Brand:** Lubegard
- **Liquid Volume:** 10 Fluid Ounces
- **Material:** Synthetic
- **Package Information:** Bottle
- **Recommended Uses For Product:** all manual transmissions, transaxles and final drives that require gear oil

## Images

![Lubegard 30903 Gear Fluid Supplement, 8 oz. - Image 1](https://m.media-amazon.com/images/I/81bZo+buwzL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 100% works. Highly recommended. Best $10 I've ever spent.
*by V***S on August 13, 2025*

Replaced the old and neglected gear oil in my '97 Nissan D21 pickup with brand new Redline MT90. Thought it would improve the clunky shifting but it did the opposite. 2nd, 3rd, and 4th started grinding. My theory is that the old fluid had lots of wear particles in it that helped the synchronizers grab. The new synthetic fluid was too slippery and caused my gears to grind unless double clutching and shifting very slowly and deliberately. I added one bottle of Lubegard supplement and I could immediately feel the shifts improve. I still shift slow and carefully, but it's much more forgiving and the synchros grab much better. It feels like a different gear box now. Highly recommended, I will for sure buy more.

### ⭐⭐⭐⭐⭐ Lubegard Gear Supplement
*by M***C on July 1, 2013*

Another update May 2023: I've since used this in so many different vehicles not just by own but families and friends. It has helped on a couple of occasions quiet down a noisy diff, not completely but definitely quieter. And no chattering or noises from any of the Ford differentials I've put it in. Over several years of testing I can honestly say great product! Not sure if I would use it in a highly sensitive manual transmission though as it does reduce friction quite a bit which is a great thing but sometimes not so much in a manual transmission :) Update October 2018: The benefits i had noticed continued in the F250 while i had it (no longer have it) and also used it in a new application: a 2016 Ram 1500. I chose to use Redline 75w140 and this product as directed. The axle performed as i expected; very quiet. There is also LG in the motor and this truck runs beautifully. Average mpg over 24,000 miles is 19.9 combined. Not bad for a Hemi! I've used this product in my Ford F-250 in two different applications; the 4spd manual transmission and the rear axle. Using this product mixed with 80w90 in the manual trans made a considerable difference in shift quality, especially when cold. I also added a bottle in the Dana 70 rear axle w/ limited slip. Used Valvoline 75w140(contains friction modifier) and one bottle of Gear supplment. No problems after 500 miles and the axle is whisper quiet, no chattering. Lubegard isn't the sole reason the axle is quiet, but in my opinion a contributor. The LXE technology Lubegard uses has an amazing effect on reducing friction. I've used Lubegard's products in the engine, auto and manual trans, axles, coolant, and power steering with success in every application. Use this product with confidence.

### ⭐⭐⭐⭐⭐ Typically excellent Lubegard product
*by B***N on July 9, 2024*

Lubegard are the ONLY oil additives I have found - in decades of use - to be worth the money. I originally tried the ATF supplement for a serious transmission issue and it saved it. The chemistry of the ester oil is solid and works. I use the Biotech in engine oil, ATF in AT and PS applications, and the yellow in gear boxes of all types. It’s worth it.

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-03-08*