Best Hydraulic Fluid Additives of 2026

David Davis Avatar
David Davis
Last Updated: Jan 10, 2025

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Hydraulic fluid additives are chemical compounds that are added to hydraulic fluids to enhance their performance and extend their lifespan. These additives are designed to improve the lubrication properties of hydraulic fluids, prevent corrosion and wear, reduce foam formation, and improve the overall efficiency of hydraulic systems. Some common hydraulic fluid additives include anti-wear agents, viscosity improvers, anti-foam agents, and rust inhibitors. By using hydraulic fluid additives, users can improve the performance and longevity of their hydraulic systems, ultimately reducing maintenance costs and downtime.

At a Glance: Our Top Picks

Lube-Tech Endurance Hydraulic Fluid Cover #TOP 1
Lube-Tech Endurance Hydraulic Fluid
ftb score rating icon 9.9
OTC 4131A Hydraulic Ram Cover #TOP 2
OTC 4131A Hydraulic Ram
ftb score rating icon 9.8
Lucas Oil Hydraulic Oil Booster and Stop Leak - 32 oz (Case of 12) Cover #TOP 3
Lucas Oil Hydraulic Oil Booster and Stop Leak - 32 oz (Case of 12)
ftb score rating icon 9.6

Top 10 Hydraulic Fluid Additives

#TOP 1

Lube-Tech Endurance Hydraulic Fluid

Factory Racing Parts
199604
Lube-Tech Endurance Hydraulic Fluid Cover
Lube-Tech Endurance Heavy Duty Tractor Hydraulic Fluid – Ashless Formula – API GL-4 – Compatible With Farm and Construction Equipment, Transmissions, Clutches, and More – 5 Gallons (2x2.5 Gal Bottles)

Lube-Tech Hydraulic Fluid is engineered for superior performance in demanding conditions. Its enhanced shear stability ensures that the fluid maintains its integrity under heavy loads, which helps reduce wear on your equipment. The fluid’s water resistance protects critical components from moisture damage, ensuring your machinery runs smoothly. Additionally, it offers advanced wear protection, preventing rust and foam, which can extend the life of your tools. Designed to perform well in cold temperatures, it guarantees quick system responses, making it ideal for use in various farm and construction applications.

What We Like
High shear stability
Excellent water resistance
Advanced wear protection
Smooth cold-weather performance
#TOP 2

OTC 4131A Hydraulic Ram

OTC
4131A
OTC 4131A Hydraulic Ram Cover
OTC 4131A Single Acting Hydraulic Ram (10-Ton)

The OTC Hydraulic Ram is designed for heavy-duty push and pull tasks in industries such as construction and mining. Its center hole allows you to easily extend screws or cables, providing added versatility for various applications. The chrome-plated piston rods are built to resist wear, ensuring durability during use. Additionally, the superior packing and seals help maintain a high cycle life without any leakage, which means you can rely on this tool for consistent performance. With a 10-ton capacity and a compact design, this hydraulic ram is an essential tool for handling heavy equipment maintenance.

What We Like
High load capacity
Versatile application
Durable construction
Leak-free operation
#TOP 3

Lucas Oil Hydraulic Oil Booster and Stop Leak - 32 oz (Case of 12)

10019
Lucas Oil Hydraulic Oil Booster and Stop Leak - 32 oz (Case of 12) Cover
Lucas Oil 10019 Hydraulic Oil Booster & Stop Leak - 1 Quart (Pack of 12)

Introducing the Lucas Oil Hydraulic Booster - the perfect solution for your hydraulic fluid needs. This powerful formula is designed to stop leaks and prevent major overhauls, saving you time and money. With its advanced technology, it also reduces heat, ensuring optimal performance and extending the life of your equipment. Whether you're dealing with a small leak or a major issue, the Lucas Oil Hydraulic Booster has got you covered. Say goodbye to costly repairs and hello to a more efficient and reliable hydraulic system. Trust Lucas Oil to deliver the quality and performance you need.

What We Like
Stop leaks
Prevent major overhauls
Reduce heat
#TOP 4

Liqui Moly Hydraulic Lifter Additive

2770
Liqui Moly Hydraulic Lifter Additive Cover
Liqui Moly 20004 Hydraulic Lifter Addtive (12 Pack)

The Liqui Moly Lifter Additive is designed to enhance the performance of your vehicle's hydraulic lifters, ensuring smooth operation. Each package includes twelve 1-liter bottles, making it convenient for multiple uses. This additive is particularly beneficial for automotive applications, helping to restore and maintain optimal function in your engine. The bottles come with secure caps, allowing for easy storage and preventing spills, so you can keep your workspace neat while using this effective solution.

What We Like
Smooth engine operation
Convenient packaging
Ideal for automotive use
Prevent spills
#TOP 5

Mobil 102570 Automotive Accessories

Mobil
102570
Mobil 102570 Automotive Accessories Cover
Mobil 102570 Automotive Accessories, 5 gal.

This 5-gallon container of Mobil 102570 Automotive Accessories is perfect for auto and truck maintenance. The hydraulic fluid additive is made in the United States by MOBIL and includes a unit and instruction guide. It falls under the category of hydraulic fluid additives.

What We Like
Made in the United States by MOBIL
Includes a unit and instruction guide
5-gallon container is perfect for auto and truck maintenance
#TOP 6

Cerma Hydraulic Treatment 2 oz

Cerma
650019158140
2 2 oz
Cerma Hydraulic Treatment 2 oz Cover
Cerma Ceramic Hydraulic Treatment 2 oz Treatment Treats up to 5 gallons

The Cerma Hydraulic Treatment is designed to improve the performance of your hydraulic systems. Its STM-3 formula creates a protective micro-ceramic layer, which helps reduce heat and friction. This means your equipment will run cooler and last longer, especially in cold weather. You’ll also experience less downtime since the treatment minimizes the risk of oil overheating and breakage. Additionally, the moisture guard technology decreases moisture levels, while the seal conditioner keeps seals flexible and effective, preventing failures. With this treatment, you can enjoy a smoother and more reliable operation.

What We Like
Improves hydraulic performance
Reduces heat and friction
Minimizes downtime
Prevents seal failures
#TOP 7

Buyers Products 36 Gallon Hydraulic Reservoir

Buyers Products Company
BJ36SF10
Buyers Products 36 Gallon Hydraulic Reservoir Cover
Buyers Products BH36SF10 36 Gallon Bulkhead Hydraulic Reservoir

The Buyers 36 Gallon Reservoir is designed to meet your hydraulic needs with a 36-gallon gross capacity and 30 gallons of usable space. It features two 2-inch suction ports, allowing for easy access from either side, and includes a durable stainless steel strainer to keep your hydraulic fluid clean. This product is built with care by experienced engineers who prioritize quality, ensuring you receive a reliable component for your truck. With a history dating back to 1946, Buyers Products is committed to innovation and customer satisfaction, making this reservoir a dependable choice for your equipment.

What We Like
Large capacity
Easy access ports
Durable stainless steel strainer
Engineered for quality
#TOP 8

Freightliner Hydraulic Pump A14-14941-000

Freightliner
A14-14941-000
Freightliner Hydraulic Pump A14-14941-000 Cover
Freightliner Hydraulic Pump - A14-14941-000

The Freightliner Hydraulic Pump is a vital auto part designed to enhance your vehicle's performance. Coming from a trusted brand, this pump is made in the United States, ensuring quality and reliability. Weighing only 1.0 lbs, it is easy to handle and install, making it a convenient choice for users like you. With its focus on hydraulic fluid additives, this product helps maintain optimal fluid levels, which is essential for smooth operation and longevity of your vehicle's hydraulic system.

What We Like
Lightweight design
Made in the USA
Enhances vehicle performance
Easy to install
#TOP 9

GaRcan Low Viscosity Hydraulic Oil

GaRcan
KuPxqDG
GaRcan Low Viscosity Hydraulic Oil Cover
Original Equipment 1 Gallon Transmission & Hydraulic Oil,Replacement forJohn Deere OEM

The GaRcan Hydraulic Oil is a reliable choice for your machinery, providing low viscosity transmission and hydraulic oil suitable for a wide range of John Deere models. With a local delivery service, you can expect quick access to this essential fluid, ensuring your equipment remains operational without unnecessary delays. This product is not manufactured in China, which may appeal to those looking for alternatives. Additionally, it comes with a one-year warranty, giving you peace of mind with your purchase. This oil is designed to keep your tractors and riding mowers running smoothly, enhancing performance and longevity.

What We Like
Quick local delivery
No China manufacturing
One-year warranty
Compatible with many models
#TOP 10

100% Apollo Hydraulic Pump for Volvo L60 Series

100% Apollo
VOE11172711
100% Apollo Hydraulic Pump for Volvo L60 Series Cover
100% Apollo Hydraulic Pump VOE11172711 for Volvo L60E L60F L60G L60H Wheel Loader

The 100% Apollo Hydraulic Pump is designed specifically for the Volvo L60E, L60F, L60G, and L60H wheel loaders. With the part number VOE11172711, this pump ensures compatibility with your equipment, making it a reliable choice for maintenance. Although the packaging may not be perfect, it does not impact the pump's performance. If you encounter any issues that affect its usability, the seller offers a refund, providing peace of mind. This product falls under the category of hydraulic fluid additives, ensuring enhanced efficiency and functionality for your loader.

What We Like
Compatible with multiple Volvo models
Reliable performance
Refund available for issues
Enhances loader efficiency
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are additives used in hydraulic fluids?

Additives commonly used in hydraulic fluids include hindered alkylphenols and alkyl substituted diarylamines. These additives serve as antioxidants to enhance the effectiveness of the fluid. Similar types of antioxidants are also utilized in other lubricants like crankcase and driveline oils.

2. What is one of the most important additives in hydraulic oil?

One of the most important additives in hydraulic oil is zinc dialkyl dithiophosphate (ZDDP). It is a common antiwear additive used in engine and hydraulic oils. However, it may not be ideal for certain metals or oil filtration systems.

3. Can I use ATF instead of hydraulic fluid?

In most cases, hydraulic systems can operate satisfactorily with various fluids. These include engine oil, automatic transmission fluid (ATF), and oils specifically formulated for hydraulics. However, it's important to check the manufacturer's recommendations for the specific hydraulic system.

4. What helps hydraulic oil to flow smoothly?

The viscosity of hydraulic fluid plays a crucial role in determining its flow characteristics and lubrication properties. The viscosity of the fluid affects how smoothly it flows through the hydraulic system.

5. Can you use WD 40 on hydraulics?

Using water displacement chemicals like WD-40 or CRC on hydraulic systems, specifically on rods or cylinders, is not recommended. These chemicals can cause swelling of urethane seals, leading to premature seal failure or cylinder jamming. If necessary, it is best to use a suitable soluble wax rust preventer.

Editor's Notes

During our hydraulic fluid additive research, we found 24 hydraulic fluid additive products and shortlisted 10 quality products. We collected and analyzed 2,556 customer reviews through our big data system to write the hydraulic fluid additives list. We found that most customers choose hydraulic fluid additives with an average price of $717.25.

The hydraulic fluid additives are available for purchase. We have researched hundreds of brands and picked the top brands of hydraulic fluid additives, including Factory Racing Parts, OTC, Lucas Oil, Liqui Moly, Mobil. The seller of top 1 product has received honest feedback from 440 consumers with an average rating of 4.8.

Written by
David Davis Avatar

David Davis has rich experience as a mechanic and a general repairman in the automotive industry. It has given him plenty of knowledge in automobile repair, auto parts, and all kinds of tools. In his spare time, he enjoys assembling and disassembling parts for cars.