If you've discovered a rear main seal leak in your vehicle, seal the leak today before it's too late. Head to your local auto parts stores and pick up BlueDevil Rear Main Sealer. Simply add BlueDevil Rear Main Sealer to your vehicle's engine oil and your rear main seal leak will be stopped as your drive your vehicle.

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In this regard, what causes rear main oil seal leak?

The most common cause of rear seal leaks is age and/or high mileage. The seal can also leak due to the vehicle being stored for an extended period of time, or from running the engine low on oil. This causes drying and hardening of the seal leading to shrinking, cracking and tearing of the rear main seal.

Beside above, how much does it cost to fix a rear main seal leak? The average cost for a rear main seal replacement is between $248 and $313. Labor costs are estimated between $227 and $288 while parts are priced between $21 and $25. Estimate does not include taxes and fees.

In respect to this, is my rear main seal leaking?

A rear main seal leak will cause oil to drip from the bottom of the bellhousing at the front of the transmission. After a few hundred miles you can check again for leaks to see if you still have any. The most common leak that is confused as a rear main seal leak is an oil pan gasket leak at the rear of the engine.

Will a rear main seal leak get worse?

Once the rear main seal begins to fail, the rotation of the crankshaft disturbs and then the problem quickly becomes worse. It causes a problem to the engine more quickly as it allows a large amount of oil leak.

Related Question Answers

What happens if you don't fix rear main seal?

If the seal tears or cracks at all your crankshaft rotation can cause the seal to get torn up very quickly causing a very fast leak. A fast leak can lower your engine oil level to dangerous levels very quickly and dangerously low oil levels can lead to permanent engine damage.

What's the best Rear Main Seal Stop Leak?

The 3 Best Rear Main Seal Stop Leak Products On The Market

#	Product
1	BlueDevil Rear Main Sealer	Buy on Amazon
2	ATP AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle	Buy on Amazon
3	Bar's Leaks MS-1 Main Seal Motor Oil Leak Repair, 32. Fluid_Ounces	Buy on Amazon

What are the symptoms of a rear main seal leak?

Signs & Symptoms of Rear Main Seal Leaking

• Oil Spots. The most common sign of a leaking rear main seal is oil spots on a driveway or garage floor where the vehicle is parked for long periods of time.
• Smoke. Often leaking oil from a rear main seal will drip onto the vehicle's exhaust and cause smoke to come from under the car.
• Accumulation of Debris.

Will heavier weight oil stop leaks?

A heavier oil - conventional or synthetic - will slow down some leaks, but will never solve the problem. So yes, depending on the severity of your problem, it will slow the leak down.

How do you change a rear main seal without removing the transmission?

How To Replace A Rear Main Seal Without Removing The Transmission – Like A Real Mechanic

1. Disconnect The Battery. Generally, there is no need to remove the battery, as you are not going to remove the transmission.
2. Remove Driveshaft & Flexplate.
3. Remove the Rear Main Seal Hood.
4. Remove The Crankshaft Seal.

How long does it take to replace a rear main seal?

How long it normal take to replace the rear main seal? it's supposedly an 8 hours job.

Does BlueDevil rear main sealer work?

BlueDevil works as a permanent repair and does not need to be added when oil is changed. BlueDevil Rear Main Sealer restores seals to their original condition while you drive. It works on gasoline or diesel engines that use synthetic or conventional oils.

Does Oil Stop Leak work?

A stop leak product cannot work everywhere in an engine to fix the leak. For examples, an engine oil additive can never be able to stop a leak near the front seal, any sort of cork gasket or rear main seal. Whereas an engine oil product works great to stop a leak in rubber oil pan gasket.

Will a stop main seal stop a rear leak?

BlueDevil Rear Main will restore your rear main seal if it becomes dried, cracked or shrunken due to age or use. BlueDevil Rear Main Sealer is a completely liquid additive that won't clog or harm any other components or seals in your engine and will stop that annoying rear main seal leak.

Do stop leak products really work?

You can buy head gasket stop leak sealers, but they rarely work. Some stop leak products require you to completely drain the system and use the sealer with water. You don't want those because you can never really get all the water out and the remaining coolant will contaminate the coolant stop leak product.

Will Oil Stop Leak hurt my engine?

If you expect to run an engine for a long time, then a oil additive to stop leaks is a bad idea. Gas and Diesel engines have gaskets and seals to keep their oil supply where it belongs. Putting in an oil treatment to swell this seal back up may stop the leak for a little while, but it doesn't fix the problem.

How do you fix a rear main seal?

Some steps like removing the exhaust system may or may not need to be done as well.

1. Disconnect the Battery.
2. Remove the Exhaust System.
3. Remove the Driveshaft or CV Axles.
4. Remove the Transmission.
5. Remove the Flywheel or Flex Plate.
6. Remove the Rear Main Seal Housing Bolts.
7. Remove the Rear Main Crankshaft Seal.

What is a rear seal leak?

Rear Main Seal. The rear main seal keeps oil sealed inside the rear of the engine, where the crankshaft connects with the transmission. The traditional fix for a leaking main seal is to replace it, but because of the typically high labor cost some vehicle owners use oil additives designed to restore seals.

What is best Oil Stop Leak?

BlueDevil Oil Step Leak is the best oil stop leak on the market because it is specifically designed to absorb into all of the seals in your engine expanding and revitalizing them back to their original size, shape and flexibility without later destroying them.

Can engine oil get into transmission?

Transmissions connect at almost no point with your car engine. Internal seals are designed to leak liquid onto the ground, not internally to other parts of the car. If you suspect contamination, it may be that your mechanic accidentally switched out engine oil with transmission fluid.

What is a front main seal?

At the front of the engine there is a seal that designed to control oil from leaking out. This seal is located at the front of the crankshaft as it protrudes out of the front of the engine block. Typically the front main seal is pressed into the front timing cover or into the seal housing on timing belt motors.

Is it worth fixing a rear main seal?

Replacing a rear main seal can be so expensive the cost to replace it may be more than you have to spend, or even more than your vehicle is worth. When faced with a high dollar repair on an older vehicle it can be difficult to decide if it's worth dumping more money into an older vehicle that doesn't have much value.

What causes a rear main seal to fail?

In the case of your rear main seal, rubber is softer than metal so the rubber seal will wear down first causing a leak. Things like sand, salt or road grime can cause premature failure of your rear main seal from the outside in. There are many reasons you should regularly change your engine oil.

Does bars leak Rear Main Seal Repair work?

Will Bar's Leaks Rear Main Seal Repair work on other oil leaks? Yes. Even though it is specially designed to seal rear main leaks, it also works better than a conventional stop leak on all other engine oil leaks.