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Gear Oil For Differential Comparison - July 2025
| 1 Best Choice  9.9Exceptional | 2 Best Value  9.6Exceptional | 3  9.5Excellent | 4  9.3Excellent |
| View DealOn Amazon | View DealOn Amazon | View DealOn Amazon | View DealOn Amazon |
ModelValvoline Advanced Full Synthetic 75W-140 Gear Oil 1 QT | Model Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon | Model Lucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil - 1 Quart | Model Lucas Oil 10042 Heavy Duty High Performance SAE 85W-140 Gear Oil - 1 Quart |
BrandValvoline | Brand LUCAS | Brand Lucas Oil | Brand LUCAS |
Reviews | Reviews | Reviews  | Reviews |
Tech Specs | |||
product dimensions 3.38 x 3.38 x 11.6 inches | product dimensions 4 x 6 x 6 inches | product dimensions 11.6 x 3.3 x 3.25 inches | product dimensions 4.58 x 1.58 x 0.84 inches |
global trade identification number 00074130009820 | global trade identification number 00049807100469 | global trade identification number 00049807100438 | global trade identification number 00049807100421 |
recommended uses for product Automotive | recommended uses for product Gear Oil | recommended uses for product Vehicle | recommended uses for product Automotive |
package information Jug | package information Bottle | package information Bottle | package information Bottle |
item weight 1.92 pounds | item weight 0.01 ounces | item weight 2.02 pounds | item weight 2.03 pounds |
specific uses for product Vehicle manual transmissions, differentials, and non-synchronized manual transmissions | specific uses for product High performance and heavy-duty applications | specific uses for product High performance, Heavy-duty applications, Race cars | specific uses for product Shock loading applications, high performance and heavy-duty use in limited slip differentials |
viscosity 75W-140 | viscosity SAE 80W-90 | viscosity 80W-90 | viscosity 85W-140 |
item form Oil | item form Oil | item form Oil | item form Oil |
material Synthetic | material Blend | material Blend | material Blend |
customer reviews4.8 4.8 out of 5 stars 5, 639 ratings 4.8 out of 5 stars | customer reviews 4.8 4.8 out of 5 stars 1, 620 ratings 4.8 out of 5 stars | customer reviews 4.8 4.8 out of 5 stars 3, 616 ratings 4.8 out of 5 stars | customer reviews 4.8 4.8 out of 5 stars 896 ratings 4.8 out of 5 stars |
unit count 32.0 Fl Oz | unit count 128.0 Fluid Ounces | unit count 32.0 Fluid Ounces | unit count 31.9881 Fluid Ounces |
liquid volume 1 Quarts | liquid volume 1 Gallons | liquid volume 1 Gallons | liquid volume 0.95 Liters |
manufacturer part number 773636 | manufacturer part number LUCA10046 | manufacturer part number - | manufacturer part number LUCA10042 |
model SynPower | model Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon | model - | model Lucas Oil 10042 Heavy Duty High Performance SAE 85W-140 Gear Oil - 1 Quart |
number of items- | number of items 1 | number of items 1 | number of items 1 |
Available On  | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.9
1ValvolineValvoline Advanced Full Synthetic 75W-140 Gear Oil 1 QT
Why we love it
Maintains performance in low temperatures.
Provides outstanding thermal stability and cleanliness.
Protects gear teeth from rust and corrosion.
Main highlights- Reduces chattering and protects gear teeth from oxidation, rust, and wear
- Meets the demands of conventional and limited slip rear differentials where API GL-5 is specified, as well as non-synchronized manual transmissions that require API GL-4
- Fights corrosion and rust with emulsifying agents and safeguards against impurities, oxidation and thermal breakdown
- Exceptional high and low temperature protection ranging from -22F to 390F degrees
-
9.6
2LUCAS21% Off
Lucas Oil 10046 SAE 80W-90 Heavy Duty Gear Oil - 1 Gallon
Why we love it
Reduces wear and drag effectively.
Perfect for heavy-duty gear applications.
Excellent heat control capabilities.
Main highlights- Incorporates Lucas cutting-edge additive technology derived from top-rated Lucas Heavy Duty Oil Stabilizer, the number one supplemental oil in the heavy-duty industry
- Helps to control heat
- Contains extraordinary anti-wear and lubricity agents, ensuring exceptional protection against wear and reducing drag
- Available in 1 quart and 1 gallon bottle sizes
-
9.5
3
Lucas OilLucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil - 1 Quart
Why we love it
Excellent wear protection.
Reduces heat and friction.
Ideal for heavy-duty use.
Main highlights- Incorporates Lucas cutting-edge additive technology derived from top-rated Lucas Heavy Duty Oil Stabilizer, the number one supplemental oil in the heavy-duty industry
- Helps to control heat
- Contains extraordinary anti-wear and lubricity agents, ensuring exceptional protection against wear and reducing drag
- Available in 1 quart and 1 gallon bottle sizes
Our ranking system
At BestChoice.com, our team curates a selection of top products from a vast array available online, using a sophisticated ranking system based on carefully defined criteria.While traditional hands-on testing has its merits, our use of AI technology offers distinct advantages. AI allows us to process and analyze vast amounts of data from multiple sources, providing a comprehensive view that goes beyond what manual testing can achieve. This approach enables us to deliver insights that are aligned with current trends and consumer preferences, ensuring our reviews are both relevant and up-to-date.
Features
Our AI-driven analysis examines key attributes, capabilities, and other critical factors tailored to each product category. This method allows us to assess effectiveness from various perspectives, ensuring a well-rounded evaluation.
Consumer Reviews
We aggregate and evaluate consumer feedback from across the internet, giving weight to ratings and reviews that reflect the most reliable insights. AI enhances this process by filtering and prioritizing data, offering a balanced view without the need for direct personal endorsements.
Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
