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If your car seems to be losing oil quickly but you do not see visible leakage when your car is parked, your rear main seal could be in the early stages of failure. Make sure to check the cover gasket and valley pan for leaks. These much simpler repairs can sometimes be misdiagnosed as a rear main seal leak.
How do I know if my rear main seal is leaking?
The best way to prove that you’ve got a rear main seal leak is the check if the engine side of the flexplate or flywheel is oily. If the rear main seal is leaking on your engine it will drip oil onto the flexplate or flywheel and sling oil around the bellhousing.
Where does a rear main seal leak from?
An oil leak from the main seal, also known as the rear crankshaft seal, will usually drip from where the transmission connects to the engine, though it may show up elsewhere, such as on the oil pan.
How do you stop a rear main seal from leaking?
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.
How long can a rear main seal leak?
Most leaks will stop within 100 miles or 2 days of driving. To prevent future leaks and for outstanding preventive maintenance, install Rear Main Seal Repair every 5,000 miles or with every oil change.
Can you replace rear main seal without removing engine?
Yes, you can ask a mechanic to fix it for you, but you will be surprise to know the rear main seal replacement cost. It will sweep your bank account like a broom. Usually, we will need to remove the transmission before reaching to the rear main seal.
Can a rear main seal leak cause low oil pressure?
But no it will not cause low oil pressure.
Why is my new rear main seal leaking?
Is it the rear main seal that is leaking? On most engines, oil leaks can occur above and below the rear main seal. It could be a leaking oil pressure sensor, oil pan gasket or galley plug near the seal that causes oil to come from the bell housing. Adding dye to the oil can help reveal where the oil is coming from.
How much does it cost to fix a rear main seal leak?
Even though the parts won’t cost more than $100, the cost of labor is what makes the rear main seal repair very expensive. Mechanics will charge between $500 and $1800 for the labor alone, with the average total cost of repair being $1100.
Can a rear main seal leak cause transmission problems?
Being made of rubber, it can get corroded or weakened with time and normal use. If it does start to leak, then it can lead to major problems, usually within the transmission.
How many hours does it take to replace a rear main seal?
Replacing a Rear Main Seal However, the process to get to the rear main seal to replace it often requires removal of the entire engine and transmission from the vehicle, a job that can only be done by very skilled mechanics and even then can take 6-10 hours!.
Is Blue Devil a permanent fix?
The BlueDevil head gasket sealer ensures that your car’s vital component, the engine, is permanently fixed in terms of seals and cracks. This Blue Devil head gasket sealer works on warped or cracked heads and solves leakage issues related to the freeze plugs or heater cores.
Is a rear main seal leak serious?
Rear main seal leaks are so dangerous because it is possible for the leak to occur at a very fast rate. Due to the location, it is subject to high oil pressure. Critically low oil levels can lead to permanent damage to your engine, and if the oil light ever comes on, it is recommended you stop driving immediately.
How hard is it to replace a rear main seal?
Since it is such a difficult repair, it’s usually not something you can do yourself and your mechanic has to charge a lot for. 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.
Does Blue Devil work rear main seal?
Description. BlueDevil Rear Main Sealer permanently stops rear main seal leaks. Just add to the engine oil to restore and seal gaskets. BlueDevil Rear Main Sealer is a great repair for timing cover leaks.
What causes low oil pressure in an engine?
When oil viscosity is too low or high, it may be detected as a loss of pressure in the oil supply to the engine. Viscosity that is too high may produce greater resistance from the oil being pumped, leading to a lack of lubrication in the system and consequently lower pressure.
Can oil leak cause low oil pressure?
#5) Oil Leak Finally, an oil leak can cause low oil pressure in your car. Depending on the specific type of car that you drive, it may hold anywhere from 5 to 8 quarts of oil. If the dipstick shows below normal oil levels, it may indicate a leak, in which case your car may suffer from low oil pressure.
What causes main seal oil leak?
Common causes of seal valve leaks include vehicle age and mileage. However, one of the likeliest reasons for a seal leak is the prolonged storage of a vehicle. When you store a vehicle in a garage for weeks or months on end, the seal can dry and harden, which can ultimately lead to cracks and leaks.
Is it worth replacing a rear main seal?
The rear main seal is one of the essential seals in your vehicle that you don’t expect to leak unless you’re dropping your engine or transmission because replacing this seal requires dissembling the engine or transmission before you can reach it.
How long does it take for Blue Devil rear main seal to work?
Just be patient and give it 30-45 days to work.
