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. It is also connected to the engine, which must be slick with oil to function properly.
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.
Is a rear main seal leak worth fixing?
The rear main seal is found at the back of the engine between the engine and the transmission, which seals the crankshaft’s back end from leaking. It is an expensive fix because, most times, it requires removing the transmission or dismantling the engine.
Can you replace a rear main seal without removing the transmission?
It is certainly possible to replace your rear main seal yourself, without removing the transmission, if you have some knowledge of cars, understand your engine, and have the tools. It is usually professional to perform this type of procedure.
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 a rear main seal to fail?
Extreme operating conditions like extraordinarily high heat or foreign chemicals can also cause rear main seal failure. High heat can cause seals to get brittle or hard and chemicals can cause reactions with the materials some seals are made from.
Does BlueDevil Rear Main Sealer work?
Is Blue Devil Bad for Your Engine? The answer is a resounding no. And if you are wondering about the safety of using other brands of rear main seal conditioners and stop-leak products like Bar’s Leak or Justice Brothers, don’t worry.
Does a rear main seal leak oil or transmission fluid?
The rear main seal prevents oil from leaking past the spinning crankshaft flange. This leak is a common problem as an engine wears. If either of these seals is leaking, the engine and the transmission must be separated, and a new seal installed to repair this leak.
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.
