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The main symptom of a rear seal leak is when your car starts leaking engine oil at a faster rate. If your vehicle has started leaving black puddles on your driveway or parking lot, something is definitely wrong with the situation underneath the vehicle.
How do you know if your 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.
What happens when a rear main seal goes bad?
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.
How much does it cost to repair 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 you drive with rear main seal leak?
Driving with a rear main seal leak is dangerous due to the high possibility of a very fast leak. A fast leak will lower your engine oil level to dangerous levels very quickly, which can lead to permanent engine damage.
Where does 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.
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.
Can you replace a rear main seal without removing the transmission?
Changing the rear mail seal requires you to work hard for a long time. But you can do this rear main seal replace without removing the transmission. It is not less difficult than the other way, however, you can do it on your own.
Can a rear main seal leak cause low oil pressure?
But no it will not cause low oil pressure.
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!.
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.
How often should a rear main seal be replaced?
A good inspection of all the seals in your car is a must every 50,000 miles. This is to make sure that everything is in check and nothing is prone to failure.
Will oil Stop leak hurt my engine?
Some old-fashioned oil stop leaks were not good for engines. Modern technology has caused the creation of better formulas, so today’s products should work just fine. However, if you use the wrong oil stop leak, it can cause engine damage, so make sure to do your research and choose the proper additive.
How fast does a rear main seal leak?
#2 – Need For Frequent Top-Offs. Rear main seal leaks are known for their tendency to leak an excessive amount of oil in short order. In severe cases, a compromised rear main seal can leak as much as a quart of oil in a week’s time.
Is it hard 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.
What is the difference between Blue Devil Oil Stop Leak and rear main sealer?
Answer: According to a Blue Devil representative, the Oil Stop Leak is simply more concentrated than their Rear Main Seal product and will stop all types of leaks including rear main seals.
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.
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.
How long does it take for Blue Devil rear main seal to work?
Just be patient and give it 30-45 days to work.
