Tillie Doyle
Deep transmission pans are a great way to increase oil capacity, improve cooling, and enhance performance. They are especially useful for larger vehicles or those used for towing/hauling. While some people opt for stock pans, deep pans can hold 2 to 3 extra quarts of transmission fluid, which can make a significant difference over time. Additionally, deep pans are known to strengthen the bottom of the case, preventing case twisting and reducing problems with the valve body. When it comes to installation, some users have shared their experiences with different brands and provided insights on pricing, ease of installation, and performance. With a variety of options available, such as the Mag-Hytec, RevMax, and Derale pans, it is important to consider factors like cost, effectiveness, and compatibility with your vehicle to make an informed decision.
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What You'll Learn
Benefits of a deep transmission pan
While opinions vary on the benefits of a deep transmission pan, there are several advantages that are often cited. One of the most commonly mentioned benefits is increased fluid capacity, which can result in improved performance and reduced overheating under heavy loads. This is because the additional fluid takes longer to reach full operating temperature, and even when it does, the greater volume of fluid available can help to absorb contaminants and maintain optimal temperature levels. This is especially beneficial for diesel transmissions, which often operate at sub-optimal temperatures, particularly when towing.
Another benefit of deep transmission pans is their potential to improve the longevity of the additive package. With more fluid available to do the same amount of work, the additives in the fluid are less likely to be depleted over time, thus extending the life of the transmission fluid.
Deep transmission pans may also offer advantages in certain off-road situations. For example, when navigating steep side hills and hard climbs, a deeper pan can prevent fluid from coming out of the breather, provided that the filter extension is used to lower the filter and the pickup into the additional fluid.
Additionally, some deep transmission pans are designed with features such as magnetic drain plugs, which can trap particles and prevent them from causing issues down the line. These pans may also be reinforced and more rigid, providing structural benefits.
While some people question the effectiveness of deep transmission pans in cooling the transmission fluid, citing the lack of cool airflow around the pan, others argue that the increased fluid capacity can lead to a noticeable drop in temperature. Ultimately, the benefits of a deep transmission pan may depend on specific use cases and vehicle configurations.
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Choosing the right pan
Choosing the right transmission pan is essential for optimal performance and longevity of your vehicle's transmission. Here are some factors to consider when selecting a deep transmission pan:
Material: Aluminum transmission pans are highly regarded due to their superior heat dissipation capabilities, which help cool the ATF (automatic transmission fluid) more effectively. Aluminum pans are also known for their durability and ease of sealing. However, aluminum pans, especially deep ones, tend to be more expensive and harder to find in stock depth.
Cooling Features: Some pans are designed with additional cooling features, such as cooling fins or cooling tubes, which further enhance heat dissipation. Cooling fins are typically found on aluminum pans and act as ridges that increase the surface area for better heat distribution. Cooling tubes run through the bottom of the pan, providing a direct path for heat transfer. While these features improve performance, they also increase the cost of the pan.
Capacity: Deep transmission pans offer increased fluid capacity, typically allowing for an extra 2 to 4 quarts of ATF. This additional fluid helps to maximize cooling power and reduces the frequency of transmission services. However, it's important to consider the trade-off between increased capacity and the time it takes for the fluid to heat up or cool down.
Drain Plug: A drain plug is a convenient feature that allows for easy fluid drainage. When choosing a pan with a drain plug, pay attention to user reviews regarding leakage issues. Some pans, like the PPE pan, also include a magnetic drain plug that traps particles, preventing potential issues down the line.
Vehicle Compatibility: It is crucial to select a deep transmission pan that is compatible with your vehicle's make and model. Ensure that the pan you choose fits properly and does not interfere with your vehicle's ground clearance, especially if your car sits low to the ground.
Cost: Deep transmission pans vary in price, and it's important to consider your budget when making a selection. While some pans can be relatively inexpensive, such as the Dorman pan mentioned at $27, others can cost several hundred dollars, like the cast aluminum pan priced at nearly $300.
User Reviews: Before settling on a particular deep transmission pan, it's beneficial to research user reviews and experiences. Forums and online communities can provide valuable insights into the performance, durability, and potential issues of specific pans.
By considering these factors and doing your research, you can make an informed decision when choosing the right deep transmission pan for your vehicle.
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Installation process
To install a deep transmission pan, you will need to first purchase the correct pan for your vehicle's transmission. Ensure that the pan you have chosen is compatible with your vehicle's transmission by referring to the manufacturer's specifications.
Once you have the correct pan, park your vehicle on a level surface and engage the parking brake. Place wheel chocks around the wheels for added safety. Then, locate the drain plug on your vehicle's existing transmission pan and place a drain pan or container underneath to catch the fluid. Remove the drain plug using the appropriate tool and allow the fluid to drain completely.
Next, locate and remove the bolts securing the existing transmission pan to the transmission. Be careful not to strip the threads on the bolts during removal. Once all the bolts are removed, carefully lower the existing transmission pan and set it aside. Clean the mating surface of the transmission and inspect it for any signs of damage or wear.
Take your new deep transmission pan and ensure that the gasket or sealing material is properly installed and seated. Carefully position the new pan onto the transmission, ensuring proper alignment with the bolt holes. Secure the new pan in place by installing the bolts and tightening them to the manufacturer's specified torque settings.
Finally, refill the transmission with the appropriate type and amount of fluid. Start the vehicle and check for any leaks around the pan and gasket. Check the fluid level with the engine running and add more fluid as necessary. Lower the vehicle and remove the wheel chocks. Test drive the vehicle to ensure proper operation and enjoy the benefits of your new deep transmission pan!
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Common issues and troubleshooting
One of the most common issues with transmission pans is leakage. This can be caused by a number of factors, including loose bolts or drain plugs, slipping or cracked pan gaskets, or damage caused by large objects striking the pan. To prevent leakage, ensure that all bolts and plugs are securely tightened, use a gasket maker or cellulose gasket to prevent slipping, and avoid striking the pan with large objects.
Another issue that may be encountered is a lack of clearance during installation, particularly with deeper pans. This can be addressed by carefully prying between the pipe and the frame to create additional space, but it is important to exercise caution to avoid damaging any components.
Some users have also reported issues with drain plugs leaking. To prevent this, it is important to follow the manufacturer's instructions for tightening the internal nut and to use a crush gasket or an anaerobic gasket maker.
In addition, when using a deep transmission pan, it is important to consider the increased time it takes for the fluid to heat up and cool down. This can impact the overall performance of the vehicle, particularly during hard acceleration or when towing heavy loads.
Finally, while deep pans can provide additional fluid capacity and improved cooling, they may not offer a significant advantage in terms of lowering temperatures. The effectiveness of a deep pan can depend on various factors, including the type of vehicle, driving conditions, and the presence of additional cooling systems.
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Maintenance tips
A deep transmission pan is a great way to improve the cooling of your transmission fluid, especially for larger vehicles or those used for towing/hauling. It is important to keep on top of the maintenance of your transmission pan to ensure it continues to function effectively and efficiently.
Firstly, it is recommended to change the pan fluid regularly to check for debris. This is especially important if you are using your vehicle for in-town driving and highway towing. It is advised to change the fluid every 20,000-25,000 miles.
When it comes to the gasket, it is best to avoid using RTV sealants and cork-based gaskets as they can create residue that contaminates the ATF and makes removing the pan difficult. Instead, opt for a reusable rubber transmission pan gasket as it prevents leaks, lasts longer, and makes fluid changes easier. Inspect the gasket each time you change the fluid.
If your transmission does not have a drain plug, you will need to remove the pan to drain the fluid. Be cautious when performing a full flush on a high-mileage transmission as it may cause harm and is not often recommended.
If you are using a drain plug, do not over-tighten it as it may get stuck. Apply a thin layer of oil to the drain plug O-ring and tighten it with two fingers using an Allen wrench.
Additionally, consider adding magnets to the pan when you drop it, as they can help collect debris and are usually available for free or at a very low cost from local transmission shops.
If you are looking for improved cooling, you may also want to consider installing an aftermarket transmission cooler, which can provide significant temperature reductions.
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Frequently asked questions
A deep transmission pan allows the transmission to hold an extra 2 to 3 quarts of transmission fluid, which is highly recommended for larger vehicles or towing/hauling. The extra fluid helps to cool ATF more and combined with an external transmission cooler, can significantly lengthen your transmission's lifespan.
Mag-Hytec, RevMax, and Goerend all make good deep transmission pans. Mag-Hytec holds 3 quarts over stock, while RevMax holds 4 quarts over stock. Derale also makes a great cooling tube pan that helps to reduce fluid temperatures.
It is important to note that installing a transmission pan will not improve cooling. If you want more cooling, you should add a cooling system. Additionally, aluminum pans are harder to manoeuvre on and off the trans due to the spin-on internal filter hanging down, so be sure to consider the type of pan you are installing.
Make sure to have enough fluid to fill the backup plus the extra. Additionally, consider using a gasket to prevent leaks. The lube locker gasket is self-sealing and reusable.
Yes, you could install an external transmission cooler instead. This will also increase the oil capacity and help to keep temperatures down.
