80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (2024)

  • Tihana S

Updated on September 14, 2022

There are a lot of different gear oils on the market these days, and it can be tough to decide which one is right for your vehicle. We will compare 80w90 vs 75w90 Gear Oil to help you make the best decision for your needs.

If you’re looking for gear oil for high-performance applications, then 80w90 is the way to go. On the other hand, 75w90 gear oil is the better choice for more versatile uses. 80w90 gear oil is thicker than 75w90 gear oil. In other words, it provides more protection for your gears. However, 80w90 gear oil can also make your engine work harder.

80w90 Gear Oil

80w90 gear oil is a high-performance option that is designed for use in vehicles that see a lot of wear and tear. This type of oil can withstand high temperatures and heavy loads, making it ideal for use in race cars or other high-performance vehicles.

80w90 gear oil can also be used in trucks and SUVs that see a lot of off-road driving. If you are looking for a gear oil that will give your vehicle the best possible performance, then 80w90 gear oil is the way to go.

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (1)

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75w90 Gear Oil

75w90 gear oil is a more versatile option that can be used in a wide range of applications. This type of oil can handle moderate temperatures and loads, making it a good choice for use in passenger cars or light-duty trucks.

75w90 gear oil can also be used in heavier vehicles, such as trucks and SUVs, but it is not recommended for use in high-performance applications. If you are looking for a gear oil that can be used in a variety of different vehicles, then 75w90 gear oil is the way to go.

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (2)

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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

80w90 vs 75w90: Differences

Gear oils may be difficult to distinguish since they are all liquid, but there are significant distinctions between them. Gear oil is classified by grade and SAE number.

The usage of 80w90 and 75w90 gear oils varies significantly in terms of their implementation, components used, and other factors that aren’t visible.

Let’s compare and see what distinguishes 80w90 vs 75w90.

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (3)

80w90 vs 75w90: Viscosity

The first thing to note is that 80w90 gear oil is thicker than 75w90 gear oil.

This means that 80w90 gear oil will provide more protection for your gears, but it will also make your vehicle’s engine work harder. 80w90 gear oil is typically used in high-performance applications, while 75w90 gear oil can be used in a wider range of applications.

The Winner: 80w90 gear oil

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (4)

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Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

80w90 vs 75w90: Price

80w90 gear oil is typically more expensive than 75w90 gear oil. This is because 80w90 gear oil is designed for use in high-performance applications, while 75w90 gear oil can be used in a wider range of applications.

The Winner: 75w90 gear oil

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (5)

Prices pulled from the Amazon Product Advertising API on:

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

80w90 vs 75w90: Protection

Another important difference between 80w90 and 75w90 gear oils is the level of protection they provide. 80w90 gear oil is designed for use in high-performance vehicles, so it provides more protection against wear and tear.

However, 80w90 gear oil can also make your engine work harder, so it is not recommended for use in all applications. 75w90 gear oil is more versatile and can be used in a wider range of applications, but it does not provide as much protection against wear and tear.

The Winner: 80w90 gear oil

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (6)

Prices pulled from the Amazon Product Advertising API on:

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

80w90 vs 75w90: Density

80w90 gear oil is thicker than 75w90 gear oil, which means that it is denser. This can make 80w90 gear oil more difficult to pour and can also cause your engine to work harder.

80w90 gear oil is typically used in high-performance applications, while 75w90 gear oil is more versatile and can be used in a wider range of applications.

The Winner: 80w90 gear oil

80w90 vs 75w90: Additives

80w90 gear oil typically has more additives than 75w90 gear oil. This is because 80w90 gear oil is designed for use in high-performance applications, while 75w90 gear oil can be used in a wider range of applications.

Additives can improve the performance of your vehicle’s engine, but they can also make your engine work harder.

The Winner: 80w90 gear oil

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (7)

Prices pulled from the Amazon Product Advertising API on:

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

80w90 vs 75w90: Operating Temperature

80w90 gear oil has a higher operating temperature than 75w90 gear oil. This means that 80w90 gear oil can handle more heat and stress, making it ideal for use in high-performance applications.

On the other hand, 80w90 gear oil can also make your engine work harder, so it is not recommended for use in all applications.

The Winner: 80w90 gear oil

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (8)

Prices pulled from the Amazon Product Advertising API on:

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

80w90 vs 75w90: Uses

80w90 gear oil is typically used in high-performance applications, while 75w90 gear oil can be used in a wider range of applications.

The Winner:75w90 gear oil

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (9)

Prices pulled from the Amazon Product Advertising API on:

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

FAQs

What is the meaning of 80W90?

80W90 is a type of gear oil.

It is a thicker oil that is used to lubricate gears and bearings. The “W” stands for winter, meaning that it can be used in colder temperatures. The “90” signifies the oil’s viscosity, or how thick it is. This type of oil is typically used in heavy-duty applications such as trucks and construction equipment.

What is the meaning of 75w90?

75w90 is a type of gear oil.

It is a thinner oil that can be used in a variety of applications. The “W” stands for winter, meaning that it can be used in colder temperatures. The “90” signifies the oil’s viscosity, or how thick it is. This type of oil is typically used in lighter-duty applications such as cars and SUVs.

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (10)

What are the benefits of 80w90 gear oil?

80w90 gear oil is thicker than 75w90 gear oil, which means that it provides more protection for your gears. However, 80w90 gear oil can also make your engine work harder. If you are looking for a gear oil that is designed for use in high-performance applications, then 80w90 gear oil is the way to go.

What are the benefits of 75w90 gear oil?

75w90 gear oil is more versatile and can be used in a wider range of applications. It is also less likely to make your engine work harder than 80w90 gear oil.

If you are looking for a more versatile gear oil that can be used in a variety of different applications, then 75w90 gear oil is the better choice.

Can You Mix 75w90 and 80w90?

If you’re wondering whether you can mix 75w90 and 80w90 oil, the answer is maybe. It depends on what your goals are and what type of vehicle you have.

If you’re simply topping off your oil level and don’t want to drain all of the old oil first, mixing these two types of oil won’t hurt anything. The viscosity (thickness) of the oil will be somewhere in between the two grades, which is fine. Your car’s engine will still be properly lubricated.

On the other hand, if you’re changing your oil completely, it’s generally best to use one consistent grade. That way you’ll know exactly what viscosity of the oil is in your engine at all times.

If you’re not sure which grade of oil to use, consult your car’s owner’s manual. It will recommend a specific viscosity and type of oil for your particular vehicle.

Can I use engine oil as gear oil?

Engine oil and gear oil are not the same. Engine oil is designed to lubricate your engine’s moving parts, while gear oil is designed to lubricate your car’s transmission and differential.

While you can technically use engine oil as gear oil, it’s not recommended. Engine oil is not as thick as gear oil, so it won’t provide the same level of protection for your gears. Additionally, using engine oil in your transmission could cause damage to your car’s seals and gaskets.

It’s always best to use the type of oil that is specifically designed for the job at hand. For transmission and differential applications, use gear oil. For engine applications, use engine oil.

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What happens if gear oil is not changed?

If you don’t change your gear oil, it will eventually break down and stop lubricating your car’s transmission and differential. This can lead to increased wear on your gears and bearings, and can eventually cause your transmission or differential to fail.

For this reason, it’s important to change your gear oil according to the schedule specified in your car’s owner’s manual.

What is the difference between gear oil and differential oil?

Gear oil and differential oil are similar, but they are not the same. Gear oil is designed to lubricate your car’s transmission, while differential oil is designed to lubricate your car’s differential.

While you can technically use gear oil in your differential and vice versa, it’s not recommended. Differential oil is thinner than gear oil, so it won’t provide the same level of protection for your gears.

Additionally, using the wrong type of oil in your transmission or differential could cause damage to your car’s seals and gaskets.

It’s always best to use the type of oil that is specifically designed for the job at hand. For transmission applications, use gear oil. For differential applications, use differential lubricants and greases.

Which is the best 75w90 gear oil?

There are a few different brands that make 75w90 gear oil, so it can be tough to choose the best one. We recommend checking reviews and doing your own research to find the brand that you think is best.

Some popular brands of 75w90 gear oil include Castrol, Valvoline, Royal Purple, and Mobil. The same goes for 80w90 gear oil.

No matter which brand you choose, make sure that you check your car’s owner’s manual to see if it has any specific requirements or recommendations for gear oil.

Can I use a 75W90 gear oil instead of 75W85?

Yes, you can use a 75W90 gear oil instead of a 75W85. The only difference between these two types of oil is the viscosity or thickness. A 75W90 gear oil will be slightly thicker than a 75W85 gear oil.

The thicker viscosity of the 75W90 oil may provide better protection for your car’s gears, but it could also make your car’s transmission work harder since it will have to overcome the increased friction.

If you’re not sure which type of gear oil to use, consult your car’s owner’s manual. It will recommend a specific viscosity and type of oil for your particular vehicle.

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (12)

Prices pulled from the Amazon Product Advertising API on:

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.

Is thicker gear oil better?

The thickness, or viscosity, of your gear oil, is important. If the oil is too thin, it won’t be able to properly lubricate your car’s gears and bearings. This can lead to increased wear and eventually failure.

If the oil is too thick, it can make your car’s transmission work harder since it will have to overcome the increased friction. The thicker viscosity may also make it more difficult for the oil to flow through your car’s transmission filter.

For this reason, it’s important to use the specific type of gear oil that is recommended for your car in your car’s owner’s manual.

What is the heaviest gear oil you can get?

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (13)

The heaviest gear oil is usually an 80w90. This type of oil is designed for use in heavy-duty applications such as tow trucks, farm equipment, and construction vehicles.

While an 80w90 gear oil can be used in lighter-duty applications, it’s not necessary. A 75w90 gear oil will typically provide adequate protection for most cars and trucks.

If you’re not sure which type of gear oil to use, consult your car’s owner’s manual. It will recommend a specific viscosity and type of oil for your particular vehicle.

What are the benefits of using synthetic gear oil?

Synthetic gear oils offer several benefits over traditional petroleum-based oils. Synthetic oils are designed to provide better protection and performance in extreme temperatures. They also tend to last longer than traditional oils, so you won’t have to change them as often.

Additionally, synthetic oils usually provide better protection against wear and tear. This can help extend the life of your car’s transmission.

If you’re looking for the best possible protection for your car’s transmission, synthetic gear oil is a good option. However, it is important to note that synthetic oils can be more expensive than traditional oils.

Is it bad to mix different brands of gear oil?

It’s not necessarily bad to mix different brands of gear oil, but it’s not ideal either. Mixing different brands of oil can cause problems with compatibility and may even void your car’s warranty.

If you need to add oil to your car’s transmission, it’s best to use the same brand and type of oil that is already in there. If you’re not sure which brand or type of oil to use, consult your car’s owner’s manual.

Conclusion

80w90 gear oil is the better choice for high-performance applications, while 75w90 gear oil is the better choice for more versatile uses. 80w90 gear oil is thicker than 75w90 gear oil, so it provides more protection for your gears.

Keep in mind that 80w90 gear oil can also make your engine work harder. If you are looking for a gear oil that is designed for use in high-performance applications, then 80w90 gear oil is the way to go.

However, if you are looking for a more versatile gear oil that can be used in a variety of different applications, then 75w90 gear oil is the better choice.

Here are some more articles for you to check out:

How Much Transmission Fluid Do I Need?

Transmission Fluid Leak When Parked: Causes and Fixes

How Long Does A Transmission Flush Take?

80w90 Vs 75w90 Gear Oil: What's The Difference And Which Is Better? (2024)

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