Is it worth getting stop leak?

The answer to this question is yes, radiator sealants really do work. However, they are not a miracle solution, and are only good for a temporary fix. Even so-called “permanent” sealants will only last for months, not years. A good radiator sealant–also called a stop-leak–can seal all kinds of cooling system leaks.
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Will stop leak hurt your engine?

Our chemical products work with your engine, radiator, hoses, lines and other components without concern for damage.
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Do stop leak products work?

sort of. While the new formulas will stop those leaks in many situations, they aren't a permanent solution. The leaking seal will, sooner or later, need replacing.
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Is Stop leak a permanent fix?

A leaking cooling system can cost you a lot of time and money to fix, and it puts you at risk of a major engine failure. K&W Instant Cooling System Stop Leak gives you a one-step, permanent repair so you can start driving again, its guaranteed.
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How long does stop leak last?

So how long can you expect them to last? It depends. If the leak is mild to moderate, we've had customers run 10,000-50,000 miles with no further issues. If the leak is more severe, or on the edge of becoming severe, the repair might last a shorter duration.
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Lucas Engine Oil STOP leak does it actually work?



Is Stop leak a temporary fix?

Radiator Repair. It's important to understand that stop-leak is usually only a temporary solution, or a solution to a minor leak. Why is there a leak in your radiator? Stop leak additives may seal the pinhole leak in your radiator, but they may not deal with the source of the damage.
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How long does it take for Stop leak to work?

Add entire bottle of stop leak to engine oil at or between oil changes. Leaks usually stop in 200 miles or 3 days of driving. If leak continues, a second application may be required or mechanical attention is needed.
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Can Stop leak damage transmission?

Many people think that using stop leak products can save money by stopping a transmission fluid leak. Unfortunately after affects of using leakage stopping products come at a significant cost. Stop leak products can cause irreparable damage to your vehicle.
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Does Lucas stop leak work?

It takes maybe about two days for the leaks to completely seal, but after the first day I noticed that there wasn't much oil leaking from underneath the vehicle. Then by the second day there was nothing. Not only did I save a lot of money, but my Highlander is now running smoother too.
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Will stop leak fix a blown head gasket?

There are many stop-leak products that are only designed to be a temporary fix, but not ours. A blown head gasket fix can be as easy as dumping a bottle of sealant in your radiator, and you're good to go. The seal created from our product is as permanent as replacing the head gasket, but with less money and time.
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Is oil Stop leak good for your car?

It is also an exceptional additive for worn and older engines, reducing engine noise and oil consumption while raising oil pressure. It contains no harmful solvents and can actually extend engine oil life by 50% or more. Leaking engines are usually older engines.
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Do oil leak additives really work?

Be aware that many oil additives only provide a quick, temporary fix for small leaks. One-off emergency use will not necessarily do your engine any harm, but repeated use can do more harm than good. After a while excess additives often settle and clog up the system.
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Will stop leak cause overheating?

And thanks to its scientifically tested formula, there is no risk that this radiator stop leak will cause overheating.
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How much Lucas Oil Stop leak should I use?

Use 20% of system capacity (example: 1 quart of Lucas Engine Oil Stop Leak to 4 quarts of motor oil.)
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How often can you use Lucas Oil Stop leak?

A: We recommend adding a bottle of Lucas Transmission Fix each time you change your transmission fluid (approximately every 30-40,000 miles), or adding a bottle to your current fluid to fix a small leak.
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How long does Wynn's Stop leak take to work?

Drive vehicle normally. Allow up to 200 miles/300 km for Engine Stop Leak to be fully effective.
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How much stop leak should I use?

Use 1/2 bottle for four cylinder engines. One bottle treats up to 4 gallons. For larger systems use one bottle for every 3 gallons of coolant capacity. Small engines or other small systems use 3 to 4 fluid ounces per gallon of fluid capacity.
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Can you use stop leak with synthetic oil?

Its blend of beneficial oils also means Engine Oil Stop Leak is compatible with petroleum, semi-synthetic and full synthetic motor oils.
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Can you use stop leak with water?

Stops and seals antifreeze/coolant leaks. Bar's Leaks Radiator Stop Leak 2X Concentrate Sealer is specially designed to stop minor to moderate cooling system leaks and drips caused by normal cooling system wear and age. It works with ALL types and colors of antifreeze coolant and/or water.
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What is the most common cause of coolant leak?

Corrosion within the radiator is one of the leading reasons that coolant leaks. As the tubes get older and weaker, you may get sediment or debris inside that causes a leak. The sealing gasket between the tank and the radiator can also wear out, and that could lead to a leak.
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What are the disadvantages of stop leak?

You will suffer from overheating. A sticky material will develop inside the engine block and all the coolant hoses. Smaller passages will clog. You'll ruin your engine… it'll need to be hot tanked to clean the stop leak from the block and head.
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Will Stop leak clog a radiator?

Here are some common chemical fix myths dispelled: I've been told stop leak products will clog up my radiator and cooling system, and could even make my problem worse. Regarding claims that stop leak products will 'clog up' your system or exacerbate the problem, they're positively not true – for our products.
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What happens if you keep driving with a coolant leak?

Depending on the cause of leakage, you may get away driving with a radiator leak for a short time. Eventually, the lack of coolant will cause your car to overheat – which may in turn precipitate damage to various engine bay components. That's why it's a good idea to stop and inspect the issue as soon as you notice it.
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