A few days back, I got my hands on a vintage Chevrolet Astro, and boy I have to say the 4L60E is something different. I’ve seen a lot of transmission systems but this was something different that too on a vintage vehicle. 

I had to test the best fluid for this transmission so I went ahead and bought a few of them. These will definitely keep your transmission healthy. 

To save you from the trouble of researching every suitable product on the market, I have prepared a comprehensive list below which would help you in deciding which transmission fluid is the best for 4L60E..

Best Transmission Fluids For 4L60E Reviewed

1.Valvoline DEX/MERC (ATF) Automatic Transmission Fluid

Valvoline DEX/MERC (ATF) Automatic Transmission Fluid

Key Details:

  • Manufacturer: Valvoline
  • Style: DEX/MERC (ATF)
  • Liquid Volume: 1 Quart

The Valvoline Automatic Transmission Fluid is an outstanding product developed by Valvoline. The is an American Owned and Operated company that has been a source of reliable products for consumers since 1866, so you know that the product will deliver to its expectations. The brand sets high standards for itself and with each and every subsequent product, it never fails to deliver in terms of quality, for all price ranges. It is an Automatic Transmission Fluid that provides better benefits to your vehicle than a Manual Transmission Fluid. It is the number 1 Automatic Transmission Fluid brand. 

The product is formulated with premium base-stocks along with extra additives to ensure high-quality performance for your vehicle which also meets the requirements of modern-day heavy demanding engines. To ensure a smooth shifting experience, the product is added with an anti-shudder protection layer which also aids in maximizing power transfer in your vehicle. It is equipped with anti-wear additives which protect the overall transmission sturdiness. It also delivers improved oil flow under cold temperatures, something which other transmission fluids may fail to achieve. It protects the film under extreme temperatures as well. 

It delivers an extremely reliable performance under both electronic and hydraulic controlled transmissions which is an added bonus. The product is well suited for the 4L60E and would be a wise choice. 

Common problem customers face is that the cost of the product is relatively higher than some of its other competitors, however, the benefits it provides justifies its price tag.

It is recommended to be used in GM MERCON, Ford DEXRON III, Ford M2C138-CJ, Ford M2C116-H, Allison C-4, Caterpillar TO-2, Allison TES-389.


Pros
  • Anti-wear technology
  • Smooth-shifting
  • Maximizes power transfer
  • Improves durability
Cons
  • Costly product

2.Castrol 03520C TRANSMAX DEX/MERC ATF

Castrol 03520C TRANSMAX DEX/MERC ATF

Key Details:

  • Manufacturer: Castrol
  • Style: DEX/MERC (ATF)
  • Liquid Volume: 1 Gallon

The Castrol TRANSMAX DEX/MERC Automatic Transmission Fluid is another brilliant product manufactured by Castrol. The brand has had a reputation for manufacturing the best of products for more than 100 years. They make products to cater to the needs of all types of vehicles under affordable price ranges. The aim is to create high-quality products at a reasonable price tag. It is an Automatic Transmission Fluid that helps in providing greater benefits when compared to a Manual Transmission Fluid – even better than the traditional transmission fluids.

The product is equipped with friction durability boosters which aid in achieving a smoother transition performance for the vehicle. The production also ensures an Improved level of protection under extreme temperatures which aid in preventing breakdowns. It also has an outstanding ability to fight off the oxidizing agents which improves the overall condition. The product also improves the fuel economy of your vehicle drastically which always is an additional benefit. The product is expertly engineered to achieve a longer transition period. It drastically reduces the overall noise that may be caused by the engine.

The drawback of using this product is that under some drastic conditions, it may lead to a deteriorated shift quality which causes hindrance. The product however ensures that the problem of power loss does not continue in your vehicle which saves the overall cost for the user.

It is licensed by General Motors and for its usage in their latest transmission technology and it is recommended for the 2005 and prior GM automatic transmissions. It is also recommended for the Ford models between 1983-1996. However, it is not recommended for its usage in DEXRON VI.


Pros
  • Improved friction durability
  • Enhances performance
  • Reduces noise
  • Better fuel economy
Cons
  • May decrease shift quality

3.Motul 105776 Dexron III

Motul 105776 Dexron III

Key Details:

  • Manufacturer: Motul
  • Style: DEX/MERC (ATF)
  • Liquid Volume: 33.81 Fluid Ounces

The Motul Dexron III is a premium product that is well suited for your 4L60E. It helps in maximizing the overall performance of your vehicle which would lead to a smoother driving experience. It aids in reducing the problem of oxidation from the transmission – something which causes a lot of problems to vehicle owners. It also combats the problem of viscosity breakdown by providing a thicker layer of protection to your vehicle. 

The overall fuel economy of your vehicle is also improved dramatically after using the Motul product. The common problem of engine lock-up is also dealt with by it. The burning smell and the increased noise in the vehicle will also be drastically reduced once you pour the product into your vehicle. It also helps in reducing delayed shifts or missing gears and cleanses the gears and provides you with an easier driving experience.

The fuel economy of your vehicle is also greatly increased. However, a common problem associated with the product is that the packaging of the same is made from an inferior material which leads to leaks over long journeys.

It is recommended for the GM DEXRON III, Allison C-4, and will work extremely well with the concerned product.


Pros
  • Premium French design
  • Genuine product
  • Improves performance
  • Smoothens shifting
Cons
  • Poor packaging

4.Triax Multi-Purpose ATF DEX III/MERC, Synthetic Blend, Friction Optimized, No Slip, Flawless Shifting, -50 F Cold Flow

Triax Multi-Purpose ATF DEX III/MERC, Synthetic Blend, Friction Optimized, No Slip, Flawless Shifting, -50 F Cold Flow

Key Details:

  • Manufacturer: Triax
  • Style: DEX III/MERC (ATF)
  • Liquid Volume: 4 Gallons

The Triax Multi-Purpose Automatic Transmission Fluid is another good alternative for the 4L60E. The product has been expertly formulated for electronically controlled transmissions. It is a premium lubricant for all types of vehicles. It also has a wide range of applications for automotive and heavy-duty transmissions. It is a Multi-Purpose Automatic Transmission Fluid thus provides extremely reliable and superior performance when compared to the Traditional Transmission or the Manual Transmission Fluids.

It is equipped with SureShift Technology which aids in achieving smoother shifting for an easier driving experience. It also provides slippage control and a negligible amount of foaming, something the other products fail to achieve. The product has a superior seal protection layer that prevents any sorts of leaks. It has a top-quality EP additive detergent that protects the synchronous and gears of the vehicle. The product works extremely well under cold temperatures and ensures the prevention of breakdown. It fights off the problem of oxidation and provides anti-wear properties to the vehicle. It has smooth shifting and frictional stability which boosts the overall performance of your vehicle.

The product is possibly one of the most expensive items on this list thus causing problems with its affordability to the user at times.

It is recommended for GM’s DEXRON III-H, Allison C-4 CAT TO-2. Type CJ4, Type A Suffix A, Allison TES 389.


Pros
  • Slippage control ensures easy shifting
  • Reduces wear
  • High viscosity stability
  • Seal protection
Cons
  • Expensive item

5.ACDelco 10-9395 Dexron VI Automatic Transmission Fluid

ACDelco 10-9395 Dexron VI Automatic Transmission Fluid

Key Details:

  • Manufacturer: ACDelco
  • Style: Dexron VI (ATF)
  • Liquid Volume: 1 Gallon

If you’re looking for a highly reliable product with backward compatibility, the ACDelco Dexron VI Automatic Transmission Fluid might be the product for you. It provides excellent protection against rust, thus strengthening your vehicle. Moreover, it also provides your vehicle with a smooth-shifting experience and eliminates the problem of missing gears or delayed shifts. This in turn leads to a reduction in the total costs the owner has to bear in the long term on the transmission fluids. 

As previously mentioned, it is compatible with older DEXRON automatic transmission fluids and can be used occasionally as an alternative. It maximizes fuel economy, eliminates the problem of engine lock up, and ensures an overall boost in the performance of the vehicle. It is an affordable product that can be trusted to suit the needs of your 4L60E. It also improves the friction durability of the vehicle and improves viscosity. 

One problematic aspect of the product is that it may cause an increase in oil-burning which leaves the owner worried as it may cause a reduction In the long-term performance of the vehicle.

It meets the GMW16444 Original Experiment Satisfaction and is recommended for GM cars and light trucks.


Pros
  • Backward compatibility
  • Enhances performance
  • Better fuel economy
  • Longer drain intervals
Cons
  • Causes burning smell

6.Transynd Full Synthetic Transmission Fluid

Transynd Full Synthetic Transmission Fluid

Key Details:

  • Manufacturer: Castrol
  • Style: Full Synthetic
  • Liquid Volume: 1 Gallon

The last product is the Transynd Full Synthetic Transmission Fluid which has been engineered by Castrol. It is a high-quality product that results in a lot more benefits than the traditional transmission fluids available on the market. It is fused with base stocks which provide it with the stability your vehicle needs to fight off the problem of rusting which is a common occurrence in high-powered engines. It also drastically reduces viscosity breakdown which strengthens your vehicle.

To provide you with a smooth driving experience, the product ensures the problem of delayed shift or missing of gears does not occur by smoothening the overall shifting process. The oil-burning smell which could not be combated by the product mentioned above is tackled extremely well by this product. It also eliminates the chances of leaks in the transmission which can be disastrous for the vehicle. 

A drawback of the same is that the grinding noise of the transmission is not reduced even after using this product. In all other aspects, this product is well suited to meet the needs of your 4L60E. It also drastically increases the drain intervals in the vehicle and is able to withstand a tremendous amount of pressure under extreme conditions and even cold weather. 

It exceeds the Allison TES 295 requirements and is very well suited.


Pros
  • Easier shifting
  • Reduces engine lockup
  • Maximizes performance
  • Affordable product
Cons
  • Harder grinding

Transmission Fluid Buying Guide

The Compatibility

This is single-handedly the most important detail before choosing your transmission fluid. You need to gather information about which type is compatible with your vehicle instead of picking any product available. Choosing the wrong transmission fluid can lead to complete failure of the transmission and even damage your vehicle massively. The DEXRON III is the compatible type for your 4L60E, thus you should choose a product that falls under the same category.

Type of Transmission Fluid

There are 2 major types of transmission fluids namely – conventional and synthetic. Conventional as the name says is the traditional fluid that delivers a satisfactory performance for your vehicle. An advantage of the product is that it is extremely cheap and can be easily affordable by anyone. However, the product does not have any sort of protection when compared to synthetic fluids. These tend to break down under extreme temperatures, cause poor vehicle performance and the drain intervals are quite frequent with these. The synthetic fluids on the other hand are fused with base stocks that provide them with strength and stability. They are able to withstand high temperatures and extreme conditions. They result in fewer breakdowns, longer drain intervals, and overall improved performance, despite being costly.

Extra Features

The additional features a product has to offer might be the deciding factor that would help you in finalizing a product. If there is a certain problem that your vehicle suffers from, choosing a product that is specially designed to combat it will result in a better overall performance of the vehicle. 

The Budget

Choosing a product that is affordable to you is a necessity. Before finalizing any product, you should analyze the overall price of the same and compare it with other products under the same price range which will not only save you from spending a few extra bucks but also marrow down your choices to choose a suitable product.

Frequently Asked Questions

Yes, however for safety reasons, activate the handbrake.

A gurgling sound develops due to excess air in the transmission line.

Dashboard Warning lights will turn on when the temperature of the transmission fluid is hotter than normal.

Adding too much transmission fluid in the vehicle causes leaks and can be highly dangerous.

Driving with low levels of transmission fluid will lead to overheating and overall damage in the transmission.

The Verdict

The top pick for transmission fluid in a higher price range would be the Valvoline DEX/MERC (ATF) Automatic Transmission Fluid. However, if you’re looking for a budget option, the Transynd Full Synthetic Transmission Fluid would suit you the best.

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