Blue Devil Oil Stop Leak Review – All You Need To Know


Blue Devil Oil Stop Leak Review – All You Need To Know

blue devil oil stop leak reviewThere’s nothing worse than finding out that your engine has a leak. Not only is it bad for your car and the environment, but it can end up costing you a tremendous amount of money to repair.

“Magic In A Bottle…”

There is a way that you can solve your leaking engine troubles without having to foot a hefty bill though.  Thanks to Blue Devil Oil Stop Leak, you can seal up the leaks in your engine, protect your car, and save yourself a good chunk of change.

Blue Devil Oil Stop Leak Review

***#1 In The Country!***


Leaks in a vehicle’s engine are a fact of life. Age and driving exposes the engine to pressure and heat, which can cause the o-rings, gaskets and other seals to harden or dry up.

Over time, this can cause cracks and holes to develop in the engine, which can lead to oil leaks.

Stop leak additives, like this one, are non-solvent chemical formulas comprised of a mixture of modifiers that cause friction, as well as other refined petroleum ingredients.

They minimize the amount of oil that passes through those worn seals and holes.

Essentially, stop leak additives revive the seals in the engine, allowing them to return to their normal shape, size and flexibility, thereby reducing or preventing oil leaks.

engine seals
Revive Those Seals!

There are plenty of engine stop leak additives on the market, but unfortunately, many of them aren’t well made.

This means that they either: 1) won’t do anything to the seals to prevent or slow oil leaks; or 2) could do more damage to the seals and the engine, causing an even bigger problem.

Thankfully, they’re not all bad…

Blue Devil – A Cost-Effective Solution

Blue Devil is one of the best engine oil stop leaks on the market.

Created by Blue Devil – who’ve been around for years and have developed an excellent reputation for delivering exceptional products – this is one of the most trusted auto additives you’re likely to find.

Their oil stop leak formula is made with only the highest quality ingredients. It’s designed to soak into all of the seals in your engine, expanding them and reviving them back to the size and shape that they were when the engine was first made.

It won’t clog your engine up!

This product is free of harmful solvents, such as petroleum distillates, that have a reputation for destroying seals after they’ve initially expand them.

Unlike other products, Blue Devil Stop Leak won’t clog your engine or cause any other damage.

It’s also designed to be used with a wide range of diesel and gasoline engines and can treat either 4 or 6 quarts of motor oil.

In fact, Blue Devil are so confident that their stop oil leak additive will work that they’ll fully refund your money if it doesn’t.

It’s quite simply the best product we could find to stop an engine oil leak.

It’s also cheap to buy and comes with FREE SHIPPING.

Check Price on Amazon

Directions for Use


Using this Stop Leak is pretty simple. The directions for use as follows:

  • Pour the entire contents of the 8 ounce bottle directly into the oil sump or crank case of the leaking component of your engine.
  • Once the solvent has been added, start up the engine and drive your vehicle.

For most leaks, the additive should seal up the leak within 1 to 2 hours. However, if your engine has an extreme leak, it could take up to 2 days of drive time for the leak to fully stop.

Here’s a short clip from the manufacturers to help:

This leading leak stopper can be used on the following components:

  • Gear cases
  • Refillable shock absorbers
  • Axle seals
  • Gearboxes
  • Gear differentials
  • Pinion seals

While it can be used on various components, it’s important to note that it can’t be used in your vehicle’s brake system or on any surfaces that have been painted.

You should also use extreme care while using it and avoid making contact with your eyes and skin. As a precaution, make sure you wear protective clothing and eye wear.

thumbs upThe Pros

There are several things that we really like about BlueDevil Oil Stop Leak. Some of the most notable benefits of this product include:

  • It permanently seals all seeping oil leaks
  • It doesn’t cause any additional damage to an engine
  • In most cases, it works within just a few hours
  • It’s extremely easy to use
  • It treats 4 to 6 quarts of motor oil
  • It works with the majority of gasoline and diesel engines

And it’s also VERY AFFORDABLE.

thumbs downThe Cons

Overall, we were very pleased with this additive; however, there were a few things that might be a little off-putting for some users. There are two particular downsides of note:

  • It may not always seal properly with leaking gaskets
  • If the damage is extensive, it may not prevent leaks entirely (and professional help should be sought)

Customer Reviews


Blue Devil currently averages a solid 3.7 stars out of 5 on Amazon. Of the 250+ people who reviewed it, 51 percent gave the product 5 stars, and very few gave it less than 3 or 4.

picture of a manThose who liked it said that the product works very well to either stop or slow leaks, that it’s easy to use, and that the price is very affordable.

Those who weren’t so happy said that it didn’t work with certain components that were causing leaks, such as the valve cover gasket.

Final Thoughts


bottleWhen it comes to oil stop leak additives, Blue Devil is one of the best on the market. It’s made of the highest quality ingredients, it’s easy to use, and in most cases it stops leaks within an hour or two.

For the price it can’t be beaten and at the time of review it came with an EXTRA 15% DISCOUNT.

Check Price


Hopefully that’s helped.

As an alternative you could try ATP AT 205 Reseal instead.

Have you had an oil leak recently?  If so, how did you fix it?  Did you use this product, or would you recommend a different engine oil stop leak?  Let us know below, we’d love to hear from you.

For a great guide on how to troubleshoot oil leaks check out this article on WikiHow.

Check out our article on how to fix an oil leak, or why not read our new post on fixing oil in your coolant.


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