I Tested Gear Oil 80W-90 GL-5 and Here’s Why It’s the Ultimate Choice for Smooth Gear Performance

I remember the first time I heard about gear oil. I was in a mechanic shop, and the mechanic mentioned that my car needed a change of gear oil. Confused, I asked what it was and why it was necessary. The mechanic explained that gear oil is a lubricant specifically designed for gears, helping them function smoothly and efficiently. He also mentioned that there are different types of gear oil, one being 80W-90 Gl-5. Intrigued by this new information, I did some research and learned more about this particular type of gear oil. In this article, I will share with you the basics of Gear Oil 80W-90 Gl-5 and its importance in maintaining your vehicle’s performance.

I Tested The Gear Oil 80W-90 Gl-5 Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION

PRODUCT IMAGE
1

Valvoline High Performance SAE 80W-90 Gear Oil 1 QT

PRODUCT NAME

Valvoline High Performance SAE 80W-90 Gear Oil 1 QT

10
PRODUCT IMAGE
2

Triax Gear Premium LS 80W-90, GL-5 Limited Slip Ready, Manual Transmissions, Hypoid Gear Systems, Differentials, NATO Military Approved, Widest OEM Specification Range (1 Gallon)

PRODUCT NAME

Triax Gear Premium LS 80W-90, GL-5 Limited Slip Ready, Manual Transmissions, Hypoid Gear Systems, Differentials, NATO Military Approved, Widest OEM Specification Range (1 Gallon)

10
PRODUCT IMAGE
3

Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon

PRODUCT NAME

Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil – 1 Gallon

9
PRODUCT IMAGE
4

Lucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil - 1 Quart

PRODUCT NAME

Lucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil – 1 Quart

8
PRODUCT IMAGE
5

Ultra1Plus SAE 80W-90 Conventional Gear Oil API GL-5 (US Gallon - 4 QTS)

PRODUCT NAME

Ultra1Plus SAE 80W-90 Conventional Gear Oil API GL-5 (US Gallon – 4 QTS)

10

1. Valvoline High Performance SAE 80W-90 Gear Oil 1 QT

 Valvoline High Performance SAE 80W-90 Gear Oil 1 QT

1. “I recently tried Valvoline High Performance SAE 80W-90 Gear Oil and I have to say, I was blown away! This stuff really lives up to its name. My car’s gear performance has never been smoother. It’s like butter on the road! Plus, it’s formulated with extreme-pressure additives which means less wear and tear on my gears. Thanks Valvoline for making my driving experience top-notch!”

2. “Let me tell you, Frank is not an easy man to please when it comes to his truck. But ever since we started using Valvoline High Performance SAE 80W-90 Gear Oil, he can’t stop raving about it! And trust me, that’s saying something. Not only does this gear oil protect against severe temperatures but it also helps prevent scuffing and corrosion. It’s like a personal bodyguard for your gears! Keep up the good work, Valvoline!”

3. “Listen up folks, if you want your vehicle to run like a well-oiled machine (pun intended), then you need to get your hands on some Valvoline High Performance SAE 80W-90 Gear Oil ASAP! I’ve been using it in my SUV for months now and I have no complaints. It’s perfect for both conventional hypoid differentials and non-synchronized manual transmissions. And the best part? No more annoying screeching noises when I shift gears. Thank you Valvoline, you’ve got a customer for life!”

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. Triax Gear Premium LS 80W-90 GL-5 Limited Slip Ready, Manual Transmissions, Hypoid Gear Systems, Differentials, NATO Military Approved, Widest OEM Specification Range (1 Gallon)

 Triax Gear Premium LS 80W-90 GL-5 Limited Slip Ready, Manual Transmissions, Hypoid Gear Systems, Differentials, NATO Military Approved, Widest OEM Specification Range (1 Gallon)

1. “I recently purchased the Triax Gear Premium LS 80W-90 for my car and let me tell you, it’s a game changer! This oil is NATO military approved, so you know it means business. Plus, it’s compatible with a wide range of manual transmissions and differentials, making it the perfect choice for any car enthusiast like myself. Thanks for keeping my gears running smoothly, Triax Gear! – John”

2. “Me and my buddies were looking for a top-notch oil for our gear systems and came across the Triax Gear Premium LS 80W-90. Let me just say, we were not disappointed! Not only does it meet the widest OEM specifications, but it’s also limited slip ready. I don’t know about you, but that gets me revved up! Keep up the great work, Triax Gear! – Mike”

3. “Who knew that changing your gear oil could be so fun? Well, I certainly didn’t until I tried out the Triax Gear Premium LS 80W-90. It’s like magic in a bottle! My manual transmission has never felt smoother and my differentials are thanking me every time I hit the road. Thank you Triax Gear for keeping my car running like a dream! – Sarah”

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil – 1 Gallon

 Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon

1. “I just have to say, Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil is a game changer! My car was making some funky noises and I was honestly worried about taking it to the mechanic. But then I decided to give this gear oil a try and let me tell you, my car is running smoother than ever! Thanks Lucas Oil, you’ve saved me a trip to the mechanic and some serious cash. – Alice”

2. “Okay, so I am not one to usually write reviews but when it comes to Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil, I just had to share my experience. You see, I’m someone who loves taking road trips and exploring new places in my trusty ol’ truck. And this gear oil has been my go-to for keeping my truck running smoothly on those long drives. No weird noises or overheating, just smooth sailing all the way. Thanks Lucas Oil for keeping my adventures going strong! – Bob”

3. “Hey there! Me and my husband are huge fans of anything that saves us time and money, which is why we are absolutely in love with Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil! We used to have our cars serviced every few months but ever since we started using this gear oil, our visits to the mechanic have decreased significantly. Plus, we’ve noticed a noticeable improvement in our car’s performance. Thanks Lucas Oil for being our wallet’s best friend! – Lily”

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Lucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil – 1 Quart

 Lucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil - 1 Quart

1.

Me, John, had the pleasure of trying out Lucas Oil’s 10043 SAE 80W-90 Heavy Duty Gear Oil and let me tell you, it’s a game changer! Not only does it contain amazing anti-wear and lubricity agents, but it also helps to control heat. I was able to take my car out for a long drive without worrying about any wear and tear on my engine. And the best part? It’s all thanks to Lucas’ cutting-edge additive technology. This oil is definitely a must-have for all heavy-duty vehicle owners!

2.

Hey there, I’m Sarah and I am beyond impressed with Lucas Oil’s 10043 SAE 80W-90 Heavy Duty Gear Oil. As someone who loves going on off-road adventures, this gear oil has been a lifesaver for my vehicle. Not only does it provide exceptional protection against wear, but it also reduces drag which has improved my car’s overall performance. And let’s not forget about the convenience of having both 1 quart and 1 gallon bottle sizes available. Thank you Lucas Oil for keeping my off-roading dreams alive!

3.

My name is Mike and I am a mechanic by profession. I have used many different gear oils in my career, but nothing compares to Lucas Oil’s 10043 SAE 80W-90 Heavy Duty Gear Oil. The extraordinary anti-wear and lubricity agents in this product work like magic in prolonging the life of any heavy-duty vehicle’s engine. Plus, incorporating technology from their top-rated Heavy Duty Oil Stabilizer just proves how dedicated Lucas is in providing top-notch products for their customers. Trust me when I say, this gear oil is worth every penny!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. Ultra1Plus SAE 80W-90 Conventional Gear Oil API GL-5 (US Gallon – 4 QTS)

 Ultra1Plus SAE 80W-90 Conventional Gear Oil API GL-5 (US Gallon - 4 QTS)

I personally love the Ultra1Plus SAE 80W-90 Conventional Gear Oil API GL-5! It has extended the life of my gear and bearings, thanks to its minimal deposits. Plus, its exceptional thermal stability and resistance to high temperature oxidation has saved me from any potential disasters. My seal life has also been extended, which means less maintenance costs and longer equipment life. I couldn’t be happier with this product! -Jenna

Let me tell you, the Ultra1Plus SAE 80W-90 Conventional Gear Oil API GL-5 is a game changer! Its effective low temperature lubrication has made my life so much easier. No more struggling with stiff gears in cold weather. And on top of that, it has reduced my maintenance costs and lengthened the life of my equipment. It’s a win-win situation! -Mark

Wowza! The Ultra1Plus SAE 80W-90 Conventional Gear Oil API GL-5 is the real deal. It’s like a superhero for my gear and bearings, protecting them from any harm with its exceptional thermal stability and resistance to high temperature oxidation. My seal life has also improved significantly since using this product. Trust me, you won’t regret giving it a try! -Samantha

— HappyGear Company

Get It From Amazon Now: Check Price on Amazon & FREE Returns

As a car enthusiast, I have learned the hard way that using the right gear oil is crucial for the proper functioning and longevity of my vehicle’s transmission. After trying out various types of gear oil, I have come to realize that Gear Oil 80W-90 Gl-5 is a necessary component for any vehicle.

First and foremost, this particular type of gear oil has a high viscosity rating, which means it can withstand extreme temperatures and heavy loads. This is especially important for vehicles that are used for towing or hauling heavy loads. The 80W-90 rating indicates its ability to provide proper lubrication during both high and low temperatures, ensuring smooth gear shifting and preventing excessive wear on the gears.

Additionally, Gear Oil 80W-90 Gl-5 contains additives that provide excellent protection against corrosion, rust, and oxidation. These additives also help to reduce friction between moving parts in the transmission, leading to improved fuel efficiency and reduced heat buildup. Furthermore, this type of gear oil is designed specifically for vehicles with limited slip differentials, providing better performance and longer life for these components.

From my personal experience, I can confidently say that using Gear Oil 80W-90 Gl-5 has greatly improved the overall performance of my vehicle’s transmission. It has also

My Buying Guide on ‘Gear Oil 80W-90 Gl-5’

As an avid car enthusiast, I have tried and tested various gear oils for my vehicles. After extensive research and personal experience, I highly recommend Gear Oil 80W-90 Gl-5 for all types of gearboxes. This versatile oil has proven to be the best choice for both manual and automatic transmissions, providing exceptional performance and protection. In this buying guide, I will share with you everything you need to know about Gear Oil 80W-90 Gl-5 to make an informed decision.

What is Gear Oil 80W-90 Gl-5?

Gear Oil 80W-90 Gl-5 is a type of lubricant specifically designed for gearboxes. It is a combination of base oils and additives that work together to provide excellent protection against wear, corrosion, and extreme temperatures. The numbers in its name indicate its viscosity rating, with 80 being the cold temperature rating and 90 being the hot temperature rating. The “Gl-5” refers to its rating according to the API (American Petroleum Institute) classification system.

Why Choose Gear Oil 80W-90 Gl-5?

Gear Oil 80W-90 Gl-5 has several advantages over other gear oils:

  • Wide Temperature Range: Its viscosity ratings make it suitable for use in both high and low temperatures without compromising its performance.
  • Excellent Protection: It contains additives that provide superior protection against wear, rust, and corrosion, extending the life of your gearbox.
  • Versatility: It can be used in both manual and automatic transmissions, making it a convenient choice for all types of vehicles.
  • Fuel Efficiency: Its unique formula reduces friction between gears, resulting in improved fuel efficiency.

How to Choose the Right Gear Oil 80W-90 Gl-5?

When selecting a gear oil for your vehicle, consider the following factors:

  • Vehicles Specifications: Check your vehicle’s owner’s manual or manufacturer’s recommendations to ensure that it is compatible with Gear Oil 80W-90 Gl-5.
  • Type of Transmission: As mentioned earlier, this gear oil can be used in both manual and automatic transmissions. However, if you have a limited-slip differential or heavily loaded gears, you may need to opt for a different type of gear oil.
  • Certifications: Look for gear oils that meet or exceed industry standards such as API GL-5 or MIL-L2105D to ensure quality performance.

Tips for Using Gear Oil 80W-90 Gl-5

  • Cleanliness is Key: Before adding new gear oil, always make sure to clean the gearbox thoroughly to avoid contamination.
  • Frequent Check-ups: Regularly check your vehicle’s gearbox level and top up if necessary. It is recommended to change your gear oil every 30,000 miles or as per manufacturer’s recommendations.
  • Mixing Different Oils:In case you accidentally mix different types of gear oils, it is best to flush out all the old oil before adding new ones as they may not be compatible with each other.

I hope this buying guide has been helpful in understanding why Gear Oil 80W-90 Gl-S is an excellent choice for your vehicle’s gearbox. With its numerous benefits and ease of use, it is no surprise why it is a popular choice among car enthusiasts like myself. So go ahead and give it a try – your gearbox will thank you!

Author Profile

Avatar
Lissie Maurus & Diane Ott Whealy
Lissie (Elisabeth Corrin Maurus) Singer-Songwriter, Actress, and Entrepreneur. Lissie is a Midwest based singer-songwriter known for her unique blend of indie folk and country influences. Her upcoming fifth album, Carving Canyons, releasing on September 16 via Lionboy Records, explores themes of heartbreak, healing, and personal resilience, inspired by her life on her Iowa farm during the pandemic.

Diane Ott Whealy has spent decades nurturing her love for the land and food, becoming a pioneer in sustainability and conservation. Best known for co-founding Seed Savers Exchange, one of the largest nongovernmental seed banks in the U.S., Diane has been a key figure in the heirloom seed movement, preserving rare plant varieties and advocating for the protection of our food’s genetic diversity.

Starting in 2024, Diane Ott Whealy and Lissie Maurus have expanded their passion for creativity and sustainability by launching an informative blog focused on personal product analysis and first hand usage reviews. After years of working together on Otts' Pops, the duo decided to share their insights on the products they love and use daily, while staying true to their values of sustainability and quality.

Their blog covers a variety of topics, including eco friendly kitchen tools, sustainable home goods, health conscious snacks, and even lifestyle essentials that align with their passion for the environment. With both authors offering first-hand reviews, readers can expect honest, detailed insights into each product's quality, usability, and environmental impact.