Best Sealant For Oil Pan Plug: Stop Those Leaks!

When it comes to oil pan plug sealants, there are a variety of products available on the market, each with its own unique features and advantages. The choice of the best sealant depends on several factors, including the type of vehicle, the specific application, and personal preferences. Some popular options include RTV silicone gasket makers, which offer high-temperature resistance and oil resistance, making them suitable for engine parts such as oil pans. Other options include thread sealants, pipe dopes, and liquid gasket sealants, which can provide effective sealing and prevent leaks. It is always recommended to refer to the vehicle's manual and seek advice from automotive experts or mechanics to ensure the chosen sealant is compatible and safe for the specific make and model of the vehicle.

Permatex Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker

Permatex Ultra Black RTV Silicone Gasket Maker is easy to use. First, clean and dry all surfaces with a residue-free solvent, such as Permatex Brake & Parts Cleaner. Cut the nozzle to the desired bead size—gaskets are best formed using a 1/16" to 1/4" bead. Apply a continuous and even bead of silicone to one surface, surrounding all bolt holes. Finger-tighten the bolts until the material begins to squeeze out around the flange. Allow to dry for one hour, then re-tighten 1/4 to 1/2 turn. The silicone will dry in one hour and fully cure in 24 hours, although more time may be needed in cold or very dry conditions.

Permatex Ultra Black RTV Silicone Gasket Maker is available in various sizes, including 3 oz, 8.75 oz, 9.5 oz, and 13 oz. It is a top-rated product with thousands of positive reviews, with customers praising its sealability, ease of application, value for money, and adhesion.

One customer review states: "I used this on a valve cover gasket repair that I did 6 months ago and I have not seen any leaks. The application was easy and the included tube aided in applying." Another review mentions: "Works great dealing around oil covers, It sticks well to your skin, so we’re gloves."

Permatex High Temperature Thread Sealant

The sealant is easy to apply and can be repositioned for up to four hours after application. It is available in 50 ml and 6 ml tubes and can be purchased from various retailers, including Amazon and Advance Auto Parts.

To use this product, it is recommended to first clean and dry the parts using Permatex Surface Prep activator. Then, knead the tube of thread sealant before applying it to the leading threads of the male fitting, leaving the first thread free of the sealant. It is important to note that this product is not recommended for use on plastics or rubber.

Teflon tape

Using Teflon tape, specifically white PTFE tape, for sealing oil drain plugs has been a topic of discussion among automotive enthusiasts and DIY mechanics. While it is commonly used in plumbing and fuel line connections, its suitability for oil drain plugs is more controversial. Here are some reasons why Teflon tape may not be the best choice for sealing an oil pan plug:

Unsuitable for High Temperatures and Pressures

Lack of Lubrication

Potential for Thread Damage

Using Teflon tape can result in over-tightening of the drain plug, which can strip or cross-thread the threads in the oil pan. This, in turn, can lead to leaks and further engine damage.

Limited Compatibility

Inadequate Sealing Mechanism

Oil drain plugs are designed to seal through the thread itself, often with the help of a gasket or washer. Teflon tape may not provide a secure seal for all oil drain plug sizes and can be less reliable than the recommended sealing methods.

Risk of Tape Entering the Engine

Over time, Teflon tape can deteriorate and break into small pieces that can enter the oil system. These fragments can block the flow of oil, leading to inadequate lubrication, increased friction, and potential damage to vital engine components such as bearings and pistons.

Unsuitable for Repeated Use

While some people have shared their positive experiences using Teflon tape on oil drain plugs, the general consensus is that it is not the best choice for this application. It is always recommended to follow the vehicle manufacturer's guidelines and use the appropriate gaskets or crush washers for a secure and leak-free oil change.

Permatex Aviation Form-a-gasket

To use this sealant effectively, follow these steps:

• Clean the surfaces of your oil pan plug and ensure they are dry.
• Use a brush to apply a thin and even coat of the Permatex Aviation Form-a-gasket sealant to each surface.
• Allow the sealant to air-dry for a few minutes.
• If needed, you can thin the sealant by adding 188-proof denatured alcohol.
• Fasten the parts into position.

This sealant has received positive reviews from customers who appreciate its performance, quality, and versatility. It is known for providing strong seals and has been successful in stopping small leaks. The sealant is also praised for its ease of application and ability to work in a wide range of applications.

When purchasing Permatex Aviation Form-a-gasket, you have the option to choose between different sizes, including 4 oz and 16 oz containers. It is readily available at automotive stores and online retailers, making it a convenient choice for your oil pan plug sealing needs.

Permatex Ultra Grey RTV Silicone Sealant

The Permatex Ultra Grey RTV Silicone Sealant is easy to apply and forms a strong, durable seal. It adheres well to various surfaces and can be used as a gasket maker or gasket sealant. The product comes in different sizes, ranging from 0.5 oz to 13 oz, ensuring you have the right amount for your project.

To achieve the best results, it is recommended to clean and dry all surfaces with a residue-free solvent before application. After applying the sealant, finger-tighten the bolts until the material begins to squeeze out, and then allow it to dry for an hour before retightening. The silicone dries in one hour and fully cures in 24 hours, although this may take longer in cold or dry conditions.

Frequently asked questions