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The 8 Best automotive hydraulic additives of 2024

Are you trying to find automotive hydraulic additives among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling automotive hydraulic additives on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 13 hours of research and did 15 automotive hydraulic additives tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best automotive hydraulic additives you can buy today

SaleNo. 1
Liqui Moly 20004 Hydraulic Lifter Additive 300 ml
  • Improves the lubrication properties of the oil
  • Cleans valve bores
  • Suitable for use in vehicles with turbochargers and vehicles with catalytic converters
  • Prevents engine noises caused by hydraulic tappets
  • Flash point: 60.0 degrees_celsius
No. 2
K&W 402033X6 Trans-X Automatic Transmission Stop Leak & Tune-Up - 32 Fl Oz Leak Repair Solution for Automotive, Power Steering, Hydraulic Systems | Car Care Fluids
  • K&W SEALANTS & SOLUTIONS: From head gaskets and engine blocks to automatic transmissions and power steering, K&W products are made to stop leakage in aging vehicles. Our sealants provide an effective alternative to costly repairs and parts replacements.
  • TRANS-X STOP LEAK & TUNE-UP: Our formula prevents leaks caused by aged seals & gaskets place. Powerful cleaning agents remove sludge, gums, & varnish that helps to prevent premature failure and extends transmission life.
  • APPLICATION RANGE: Trans-X is formulated to repair leaks in automatic transmissions, power steering, & hydraulic systems, and can be used as preventative maintenance when added to transmission fluid. This solution is not compatible with CVT or manual transmissions.
  • SAFE HANDLING: Highly flammable leak repair solution must be stored in a well-ventilated place away from direct heat. Wear appropriate personal protective equipment such as safety glasses and gloves.
  • PRODUCT SPECIFICATIONS: Trans-X Stop Leak & Tune-Up Solution is available with 32 fl oz. fill.
No. 3
ATP Automotive AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle
  • Professional strength fast acting resealer, stops leaks fast
  • Rejuivinates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems
  • Compatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil
  • Does not contain petroleum distillates, will not over-swell or breakdown seals
  • 8oz bottle will treat a 6 quart capacity, adjust accordingly
SaleNo. 4
Lucas Oil 10018 Hydraulic Oil Booster and Stop Leak - 1 Gallon
555 Consomer Reviews
Lucas Oil 10018 Hydraulic Oil Booster and Stop Leak - 1 Gallon
  • Reduces the operating temperature of hydraulic systems
  • Conditions old seals and O-rings to stop and prevent future leaks
  • Well suited for use in equipment with wet brakes
  • Removes varnish and restores pressure for more efficient operation
  • Compatible with both synthetic and conventional hydraulic fluids
  • Add lubricity for less friction, less wear, less heat and less energy consumption
  • Extends the life of hydraulic fluid up to 2 times
  • Reduces heat
  • Increases equipment life
No. 5
Lucas Oil 10019 Hydraulic Oil Booster and Stop Leak - 1 Quart, White
  • Reduces the operating temperature of hydraulic systems
  • Conditions old seals and O-rings to stop and prevent future leaks
  • Well suited for use in equipment with wet brakes
  • Removes varnish and restores pressure for more efficient operation
  • Compatible with both synthetic and conventional hydraulic fluids
  • Add lubricity for less friction, less wear, less heat and less energy consumption
  • Extends the life of hydraulic fluid up to 2 times
SaleNo. 7
Bar's Leaks High Mileage Engine Repair, 16.9 oz
  • RESTORES PERFORMANCE: Contains a combination of the best performance additives to repair the most common oil-related problems
  • INCREASES COMPRESSION AND HORSEPOWER: Restores lost compression and power, reduces noise and oil consumption, while improving the performance of worn cylinders, rings, bearings, and seals
  • STOPS LEAKS, NOISE, AND SMOKING: For most vehicles, this is your last chance before paying an expensive repair bill or replacing the vehicle
  • FRICTION MODIFIERS: Engine Repair can be used to top off the existing oil when low, or add a bottle when changing the oil and filter
No. 8
Bar's Leaks Jack Oil with Stop Leak - 12.5 oz
  • Stops Current Leaks And Prevents Future Leaks
  • Works In All Floor And Bottle Jacks And With All Snow Plow Fluids
  • Non-Corrosive, Non-Clogging & Non-Foaming
  • Compatible With All Petroleum Based, Mineral Oil, And Synthetic Fluids
No. 9
Lubrication Fundamentals, Revised and Expanded
  • Amazon Kindle Edition
  • Pirro, Don M. (Author)
  • English (Publication Language)
  • 608 Pages - 03/09/2016 (Publication Date) - CRC Press (Publisher)
SaleNo. 10
Lucas Oil 10018-4PK Hydraulic Oil Booster and Stop Leak - 1 Gallon, (Case of 4)
  • Package Dimensions: 13.12 L x 12.37 H x 12.62 W (inches)
  • Package Weight : 32.6 pounds
  • Country of Origin : United States
  • Part number: 10018-4PK
No. 13
Brake Fluid Liquid Tester Pen,1PC DOT 3 DOT 4 DOT 5.1 Brake Fluid Liquid Tester Pen, Car Diagnostic Testing Tool with 5 LED Indicators, Hydraulic Fluid Liquid Oil Moisture Analyzer
  • High quality: This brake fluid tester is made of nickel-plated metal probe, which is resistant to oil and oxidation and not easy to corrode. The shell is black matte plastic, better anti-slip and good body texture. The change of conductivity can be used to determine the change of moisture in the brake fluid.
  • Safe driving: This brake fluid tester comes with 5 LED indicators to show the percentage of moisture in the brake fluid. This product can quickly detect the health of the car's brake fluid, provide you with more accurate test results, and remind you to replace the brake fluid when necessary to avoid traffic accidents.
  • Convenient and quick: This brake fluid tester is easy to use, press the button, insert the test pen, the indicator is accurate to 1%, and you can receive the result in seconds. To save electricity, the test pen will automatically turn off the power after 20 seconds each use to save power.
  • Scope of application: This brake fluid tester is suitable for testing the moisture content in DOT-3, DOT-4, DOT-5.1 brake fluid. It is also very convenient for personal use and this product is widely used in personal workshops, repair shops and dealer workshops.
  • Easy to carry: No cable connector design, small size, light weight, easy to carry and use. If you encounter any problem when using this product, please contact us and we will try our best to solve it for you.
No. 14
Lucas Oil Products LUC10018 Hydraulic Oil Booster Stop Leak, 1 gallon , 1 Pack
  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
  • Stops leaks
  • Prevents major overhauls
  • Increases equipment life
No. 15
SEDY Fluid Extractor - 200cc Multi-Purpose Syringe, Oil Suction Pump, Manual Extraction and Filling Pump, Automotive Oil Syringe
628 Consomer Reviews
SEDY Fluid Extractor - 200cc Multi-Purpose Syringe, Oil Suction Pump, Manual Extraction and Filling Pump, Automotive Oil Syringe
  • EFFICIENCY BOOST - 200cc Multi-Purpose Syringe ensures efficient fluid pump actions, be it brake fluid, gear oil, or power steering fluid. Make every suction count!
  • DURABILITY ASSURED - Crafted from oil and chemical-resistant polypropylene; this fluid syringe promises strength and longevity. An automotive suction pump built to last.
  • SEALED PERFORMANCE - Double sealed plunger optimized for brake and anti-freeze fluids. Fuel syringe ensures enhanced reliability for all fluid extractor pump tasks.
  • VERSATILITY MAX - Adaptable fluid transfer for ATVs, boats, gearboxes, motor vehicles, RVs, and aquariums. A true fluid evacuator for diverse applications.
  • HYDRAULIC FRIENDLY - Perfect oil syringe for oil, coolant, and hydraulic systems. A large syringe offering versatility in fluid extractor and oil extractor applications.
No. 16
Supercool UV Fluid Leak Detection Dye, 8 Oz, Orange Tint
  • package height : 15.24 cm
  • package length : 4.064 cm
  • package width : 6.858 cm
  • Product type : AUTO OIL
  • Country of manufacture: United States
No. 18
InterDynamics Certified Auto Pro Oil and Fuel System UV Dye Leak Detection for Cars & Trucks & More, 1 Oz, 374CS, Universal
1,557 Consomer Reviews
InterDynamics Certified Auto Pro Oil and Fuel System UV Dye Leak Detection for Cars & Trucks & More, 1 Oz, 374CS, Universal
  • Contains one application of oil and fuel system UV leak detection dye
  • For use in engine oil transmissions power steering systems and gas and diesel fuel systems
  • Compatible with all weights of petroleum based lubricant
  • Helps locate leaks
  • Professional grade
No. 19
Ultra1Plus U1P-Duty ISO 68 AW Hydraulic Fluid
  • ✅ Good filter-ability: Prevent filter blocking.
  • ✅ Excellent water-separating properties.
  • ✅ Provide smooth operation and optimal oil service life.
  • ✅ Compatible with common seal materials usually found in hydraulic systems.
  • ✅ Maintains viscosity over periods of time.
No. 20
Motul Hydraulic Lifter Care
  • designed to clean and optimize lubrication of the oil passage ways of the hydraulic lifter circuit

How to choose a good automotive hydraulic additives

Does the idea of finding a fantastic automotive hydraulic additives make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in automotive hydraulic additives. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top automotive hydraulic additives products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top automotive hydraulic additives on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top automotive hydraulic additives brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top automotive hydraulic additives based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the automotive hydraulic additives were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good automotive hydraulic additives, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your automotive hydraulic additives.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting automotive hydraulic additives for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our automotive hydraulic additives. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what automotive hydraulic additives should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on automotive hydraulic additives.