Quick Answer: Does Blue Devil Stop Leak Really Work?

Can I 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..

Will Stop Leak harm my engine?

When you carefully follow the instructions for our engine, radiator or other stop leak products, there is no risk of damage. Always remember these points: Bar’s Leaks stop leak products work for small to moderate leaks.

How long does Blue Devil Oil Stop Leak take to work?

1 to 2 hoursPour 1 bottle (8 oz.) into leaking component’s oil sump, or crank case. Treats 4 to 6 quarts of motor oil. Start engine or equipment and operate for 1 to 2 hours or until leak has stopped (for extreme leaks up to 2 days drive time may be required).

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.

Will Blue Devil fix a blown head gasket?

BlueDevil Head Gasket Sealer is your head gasket repair solution as it will repair and seal leaks in blown head gaskets, warped or cracked heads, heater cores, and freeze plugs. … It bonds to metal, aluminum, cast, alloy, or plastic, and it’s safe and easy to use as a permanent seal for your head gasket leak.

Is it worth fixing a rear main seal?

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. When faced with a high dollar repair on an older vehicle it can be difficult to decide if it’s worth dumping more money into an older vehicle that doesn’t have much value.

Is it safe to use Blue Devil Oil Stop Leak?

Product description BlueDevil Oil Stop Leak seals engine oil leaks permanently. It is non-clogging and will not harm your engine. BlueDevil is safe and easy to use and is compatible in gasoline or diesel engines.

How good is Blue Devil rear main sealer?

5.0 out of 5 stars Worth trying before you get your rear main seal repaired. My 04 Chevy Tahoe has been sitting for months before I got it repaired. After a few weeks of driving I noticed an oil leak and it gradually got worse. To the point that it created an overnight leak that’s about 6 inches.

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.

Does Blue Devil Rear Main Seal Stop Leak work?

When there is a leak in this region, it can be an expensive fix because it involves removing the transmission. However, with 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.