A Step-By-Step Guide To Installing An Oil Pan Gasket

Installing an oil pan gasket can be a challenging task, especially when done in-chassis. Oil pan gaskets, such as the Fel-Pro® PermaDryPlus® and PermaDry®, are designed to be installed dry, with no adhesive or RTV required. However, in some cases, a small amount of RTV or sealant may be necessary at the corners or stepped areas. It's important to note that using excess adhesive or RTV can cause engine damage. To simplify the installation process, Fel-Pro has introduced SnapUps®, which help secure the gasket and pan in place before bolting. When installing an oil pan gasket, it is crucial to follow the manufacturer's instructions and be mindful of potential pitfalls, such as bending the oil pan during removal.

Use RTV at the corners and stepped areas

When installing an oil pan gasket, it is important to follow the manufacturer's recommendations for the proper use of RTV. RTV should be used sparingly and only in specific areas to ensure a leak-free assembly.

Fel-Pro® oil pan gaskets, for example, are typically installed clean and dry. However, when installing PermaDryPlus® and PermaDry® gaskets, RTV is necessary at the "corners" or where there may be a stepped area, such as an RMB retainer to block joint. This is because these areas may have gaps that require sealing.

When applying RTV, it is important to use it only on the corners and/or stepped joints. Do not apply it to the entire gasket. A small amount of RTV will fill in the gaps and ensure a proper seal. It is also important to install the assembly within five minutes of applying the RTV. Once the component is installed and torqued, allow the RTV to set and dry completely, which typically takes about 24 hours for a full cure.

Additionally, remember that RTV is not designed to be used as a supplement sealer on all gaskets. Uncured RTV can act as a lubricant and cause the gasket to slip out of place. Always consult the repair manual or the manufacturer's instructions for specific recommendations on where and how much RTV should be applied.

Adhesives for 'paper type' or cork/rubber gaskets

When installing an oil pan gasket, it is important to consider the type of adhesive required for the specific gasket material. In the case of "paper type" or cork/rubber gaskets, adhesives should be used to ensure a secure bond and effective sealing. Here are some detailed instructions and considerations for choosing and applying adhesives for these gasket types:

Choosing the Right Adhesive

The selection of the appropriate adhesive depends on factors such as temperature range, pressure range, exposure to corrosives, and industry-specific requirements. For cork/rubber gaskets, consider using a quick-drying adhesive specifically designed for rubber gaskets. Pressure-sensitive adhesives (PSAs) are another option, with acrylic, silicone, and rubber-based variants available. Acrylics offer a wide temperature range and can adhere to most surfaces, while silicone adhesives have the broadest temperature range but are the highest cost. Rubber-based adhesives are typically lower in cost and are suitable for general-use applications.

Application Techniques

When applying adhesives to paper-type or cork/rubber gaskets, ensure that the mating surfaces are clean and dry. Follow the instructions on the adhesive packaging for proper application techniques. For rubber gaskets, it is crucial to avoid using excessive amounts of adhesive, especially RTV, as it can cause the gasket to slip out of position. A light coat of adhesive or sealant on both sides of the gasket can help hold it in place and improve sealing. Always refer to the manufacturer's recommendations for specific guidelines.

Considerations for Cork/Rubber Gaskets

Cork/rubber gaskets, also known as "corkrubber", offer the advantage of true compression, which is beneficial for surfaces that are not perfectly flat. However, it is important to be cautious when tightening cork/rubber gaskets to avoid over-tightening, as it can lead to splitting and leakage. Finger-tighten the fasteners first, allow the adhesive or sealant to set, and then gently tighten to prevent splitting.

Innovative Solutions

Fel-Pro, a gasket manufacturer, offers innovative solutions like their Oil Pan SnapUps®, which simplify the installation process for oil pan gaskets. These SnapUps® hold the gasket in place, allowing for quick bolt installation without the need for additional adhesives. This can speed up the replacement process and ensure a secure fit.

No adhesive for silicone gaskets

When installing an oil pan gasket, it is important to note that different types of gaskets require different installation procedures. For instance, most Fel-Pro® oil pan gaskets are to be installed dry, including the PermaDryPlus® and PermaDry® gaskets. RTV is only necessary at the corners or where there are stepped areas.

Adhesives are not required and should be avoided for silicone gaskets. This is because no adhesive will stick to silicone. Molded silicone gaskets must be installed dry. Excessive use of adhesives or RTV can cause engine damage as they can get into the crankcase and oil galleys.

Some gaskets, such as the single-piece pan gasket, can be installed dry and will not leak. However, some people choose to add a small amount of RTV or silicone in the corners for added security. This is not always necessary, but it can provide peace of mind for those who are concerned about potential leaks.

If you are using an adhesive, it is important to choose the right type for your application. There are hundreds of variations of adhesives available, and the choice depends on factors such as temperature range, pressure range, exposure to corrosives, and industry-specific requirements. For example, pressure-sensitive adhesives (PSAs) are easy to use and cost-effective, while silicone-based adhesives offer the broadest operating temperature range but are also the highest cost.

In summary, when installing an oil pan gasket, it is important to follow the specific instructions for that type of gasket. For silicone gaskets, no adhesive is required, and they should be installed dry. Excessive adhesive use can lead to engine damage. While some gaskets can be installed dry without leaking, others may benefit from a small amount of RTV or silicone in the corners for added security.

Avoid excess adhesive to prevent engine damage

When installing an oil pan gasket, it is important to be mindful of the amount of adhesive used to prevent engine damage. Excess adhesive or RTV (Room Temperature Vulcanized Rubber) can get into the crankcase and oil galleys, causing potential engine damage. Therefore, it is recommended to use adhesives sparingly and only when necessary.

Adhesives are typically used on specific gasket materials, such as "paper type" or cork/rubber type gaskets. They are applied to create a stronger bond and seal between the gasket and the oil pan. However, it is crucial to follow the manufacturer's instructions and recommendations for the specific gasket being installed.

In the case of some gaskets, such as the Fel-Pro PermaDry® and PermaDryPlus® oil pan gaskets, they are designed to be installed clean and dry without the use of any adhesives. These gaskets rely on their own sealing technologies to create a tight seal. Applying adhesives to these types of gaskets can lead to excess adhesive, which can then cause the issues mentioned above.

Additionally, it is important to note that no adhesive will stick to silicone. Therefore, when dealing with molded silicone gaskets, they too must be installed dry without any adhesives.

To ensure a successful installation, it is always recommended to refer to the instructions provided with the gasket and, if necessary, consult a certified technician or mechanic for guidance. By following these precautions and guidelines, you can help prevent engine damage caused by excess adhesive during oil pan gasket installation.

Use thread sealer, if specified

When installing an oil pan gasket, it is important to consider the type of gasket you are using and the manufacturer's instructions. Some gaskets, such as the Fel-Pro PermaDryPlus® and PermaDry® gaskets, are designed to be installed clean and dry without the use of any sealants. However, in certain cases, the use of a thread sealer may be specified or recommended.

Thread sealants, such as RTV (room-temperature vulcanizing) silicone, are used to create a seal and prevent leaks between the gasket and the oil pan. When using a thread sealer, it is important to follow the manufacturer's instructions and apply the sealant properly. Excessive use of sealants can potentially cause engine damage if it gets into the crankcase and oil galleys.

For example, when using a cork gasket or a "paper type" gasket, it is often recommended to use a thread sealer. In this case, a small amount of RTV silicone can be applied to the corners of the gasket or the block to create a seal. This helps prevent leaks, especially in areas where different components meet, such as the oil pan, front cover, and block.

It is important to note that some gasket materials, such as molded silicone, should be installed dry, and no adhesive will stick to silicone. Therefore, it is crucial to follow the specific instructions for the type of gasket you are using.

Additionally, there are different types of thread sealants available, such as non-hardening sealants like Permatex Blue, which allow for easier removal and reassembly of the oil pan without requiring a new gasket each time. When working with thread sealants, always ensure that the mating surfaces are clean and degreased for optimal adhesion.

Frequently asked questions