Quick Answer: Is Blue Devil Rear Main Sealer Bad For Your Engine?

What is the best head gasket sealer on the market?

The Steel Seal Blown Head Gasket Fix Repair Sealer is our top pick for the best overall permanent head gasket sealer.

It works well on older and new vehicles and is suitable for cars, vans, SUVs, and trucks.

If your budget is a little tight and you still need a professional-grade sealer, check out the K-Seal ST5516 HD..

Can you replace a rear main seal without removing the transmission?

Generally, there is no need to remove the battery, as you are not going to remove the transmission. But, whenever you think about how to replace a rear main seal without removing the transmission, for the sake of security, take off the battery. … It will give you enough room to reach the rear main seal.

Does Blue Devil ruin your engine?

5 Answers. Adding “Blue Devil” sealer or any other non-approved chemicals to a motor vehicle is not necessary, a waste of money, can be dangerous (destructive) to the engine and may void the new car warranty.

Is it worth fixing a rear main seal?

Although you don’t need to get it fixed right away, the sooner you fix the rear main seal, the sooner you are going to have a high-functioning vehicle that won’t cause any future problems. … Also, you will protect your vehicle from the leaking oil, which can cause damage and corrosion to inside parts.

Will Blue Devil fix a cracked block?

BlueDevil Radiator and Block Sealer can seal your cracked block from the inside out through your vehicle’s cooling system. It is not a fibrous or particulate sealer that can harm or clog any other areas of your cooling system.

What will stop a rear main seal leak?

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.

What causes a rear main seal to fail?

Without a regular oil bath, your rear main seal can become dry and hard causing it to not seal properly around the rotating crank shaft. … 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.

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.

How long does it take for Blue Devil rear main seal to work?

30-45 daysJust be patient and give it 30-45 days to work.

Does Blue Devil oil stop work?

BlueDevil Oil Stop Leak When it is effective, however, it works amazingly well. BlueDevil does not include petroleum distillates, so it is in no way harmful to your engine or its components. This oil stop leak’s top components make it quite effective and it delivers an enhanced seal.

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.

Is Blue Devil a permanent fix?

So at this point, problem is 100% fixed. Blue Devil did the job as advertised and I’m a happy customer so far. This is supposed to be a permanent repair so real proof will be how it holds up over time, including the upcoming winter.

How many hours does it take to replace a rear main seal?

Labor time guides say approximately 7.5 hours.

Can you use Blue Devil twice?

I WOULD NOT USE BLUE DEVIL AGAIN! I do not recommend it except as a very temporary and last resort. It just has too much down side.