9 best oil additives to stop leaks

Product description

Lucas Engine Oil Stop Leak is an all new formulation of Lucas additives and very specific base stocks designed to stop seal leaks in engines. Compatible with petroleum, semi-synthetic and full synthetic motor oils.

• Compatible with petroleum, semi-synthetic and full synthetic motor oils
• Renews worn seals with no risk of damage or eventual corrosion
• Reduces engine noise and oil consumption, while raising oil pressure
• Contains no harmful solvents

User questions & answers

Question:	I have a 4.3 liter volvo penta i/o boat engine that has a small leak. i use 20w-40 oil. can i use this in a boat engine runs up to 4500 rpms
Answer:	you of course can use it, but will it fix your leak no, it will slow it down but will not stop it. lucas oil products are nothing more than super thick oil kinda of like pouring very thick gear oil into your engine. you are using a very thin oil, i would think because of high rpms & heat your oil needs to move fast & freely to keep all parts lubed. talk to a penta dealer but i'm guessing they will tell to fix the leak correctly with a new gasket or replacement part to cure the leak
Question:	Can i use both this and the lucas oil stabilizer at the same time
Answer:	I pulled this info from the vendor.Use Lucas Oil Stabilizer in gear oil to stop leaks, reduce operating temperatures and increase the life of the gear oil. Since it is pure petroleum, it can safely blend with all other automotive lubricants, even synthetics, ATF and mineral oil. It keeps old engines alive and new engines new.
Question:	questions: Does this need to be added every oil change like other products? Is it really thick like Motor Honey? Thanks
Answer:	No, you don't need to replace it on every oil change. This additive mixes with your motor oil and coats the inside of the engine as well as the seals (where usually the leaks comes from). As I've mentioned before don't overfill this two mixture (your motor oil & Lucas Stop Leak) beyond your engine's capacity. Once you've drained your old oil and replaced the drain plug & new oil filter on your vehicle carefully add the Stop Leak then the additional motor oil, checking on the dip stick every now and then while adding them, so as not you won't overfill the engine.'Motor Honey', I haven't come across this product. Is this just a figure of speech?
Question:	how do I use lucas oil stop leak
Answer:	When you change your oil put the stop leak Quart in in place of 1 of the Quarts of oil,then drive regular till next oil change.Unless your leak is extreme Lucas will stop the leak. I've used all the Lucas products for years in my cars and my 18 wheeler before i retired. Now i still use it in my personal vehicles. Love that Lucas!

Product description

Have you noticed oil leaking from your car lately? Many car owners fear the puddle they see forming under their vehicles, and many worry about the time and cost to make it go away. That leak might be due to worn or dried seals. There’s no need to worry or spend your money on a costly repair bill, however. Our Bar’s Leaks Concentrated Rear Main Seal Repair quickly and safely restores those seals so you can get back on the road. Bar’s Leaks is the leader that specializes in chemical solutions for rear main seal leaks and other automotive issues. Our products are effective and affordable. And they’re easy to use, too. If you know how to pop the hood on your car, you can install our rear oil seal solution. We design our products for ease of use, because a good solution isn’t very helpful to everyday drivers if they can’t use it. At Bar’s Leaks, we do everything we can to get you back on the road in good condition just as quickly as possible, by offering rear main seal leak products and much more. Most rear main seal leaks are caused by a combination of normal wear in the crankshaft and seal combined with the drying, hardening and shrinking of the main seal. Bar’s Leaks Concentrated Rear Main Seal Repair restores the seal to like-new condition, and also contains additives to stop leaks in severely worn seals and crankshafts. Not to mention, it works with ALL gasoline and diesel engines using conventional, high mileage and synthetic oil. We’ve gone to great lengths to ensure that our rear oil seal solution is working for you in all possible ways. You can count on us for a rear main seal leak that takes care of your problems and helps prevent future leaking. You can trust that our products are the fastest, safest way to get your show back on the road — we’ve been proving that since 1947.

• Seals timing cover, cam seal, rear main and other hard to stop oil leaks
• Add to engine oil
• Specifically designed to seal rear main leaks, but also works better than a conventional stop leak on all other leaks
• Add entire bottle of Rear Main Seal Repair to engine crankcase (where you add oil) at or between oil changes. Do not overfill. Most leaks will stop within 100 miles or 2 days of driving
• DOSAGE: One bottle treats 4 to 6 quarts of oil.

User questions & answers

Question:	Will main seal used as a spray safely rejuvinate other rubber parts like wiper blades, cv boots, door seals, etc
Answer:	Max pro or sprayaway is a better product for your intended use
Question:	What it does with my other gasket that has not have a leak
Answer:	If I'm understanding your question correctly.... you would like to know what effect this has on gaskets that are not leaking? The answer is nothing..... Thank you Eric
Question:	Can you use this with synthetic oils
Answer:	Yes, I have used it with synthetic oil with no issues.
Question:	Is this safe for diesels, specifically the Duramax 6.6L
Answer:	Yes..... According to Bars Product, this is compatible with all engines and engine oils.

Product features

Does Your Vehicle Leak Oil?

This product works in two ways to help solve most any seal type leak. 1) The seal restorer additive restores seal size, flexibility and elasticity lost due to engine heat, age and high mileage. 2) The seal polymer works by building a polymeric film around the rear main seal and also filling in any groove worn into the crankshaft by the seal.

What are the symptoms of a rear main seal leak?

Depending on the severity of the leak the first thing you may notice is the oil level going down. The next thing that happens is spotting, where you will find oil spots, located on the driveway or garage.

Will Bar’s Leaks Rear Main Seal Repair work on other oil leaks?

Yes. Even though it is specially designed to seal rear main leaks, it also works better than a conventional stop leak on all other engine oil leaks. This includes the timing cover seal, cam seals, O-rings and other seals and gaskets.

About Bar's Leaks

Bar’s Leaks is more than just a stop-leak company. We are a team of enthusiasts and experts who create memorable experiences with each and every one of our customers. With nearly 70 years of experience in helping everyday automobile owners repair leaks, we have the track record of success and long history that demonstrates our commitment and passion to helping drivers of all experience levels. You’ll see that our passion shines through in everything we do.

Each individual Bar’s Leaks product is formulated and manufactured right here in the U.S.A. We’re committed to creating fast and affordable products that fit perfectly into your lifestyle and budget. Choose Bar’s Leaks, so you can discover just how simple automotive maintenance can be when you have the right tools.

Product description

As a car ages, engine seals harden and shrink from the plasticizers being removed over time. This means leaks, and nobody has time for that. This professional strength synthetic stop leak revitalizes these worn seals and gaskets to restore them to like-new performance. This is our strongest formula ever to stop main seal, valve seals, timing cover seal, cam seals, crankshaft seal, oil pan, valve cover and all other oil leaks. What about oil burning? We have that covered too. There could be two possible reasons as to why your vehicle is burning engine oil. It may have an oil leak or you it could be burning oil during the ignition cycle. One common problem is if the cylinder walls are allowing oil to leak up from the bottom of the engine, past the piston and into the combustion chamber. So when the fuel ignites the oil does as well, and then expels it out as exhaust. Before you know it, you're dealing with an oil burning problem. The good news is that with a single application of Bar's Leaks Oil Seal, those problems will be history.

• This premium quality synthetic blend works with all types of motor/engine oil including regular petroleum, high mileage, synthetic blends and fully synthetic formulas
• Works in all gasoline and diesel engines including turbocharged, Eco Boost, hybrid and even racing engines, including 3, 4, 5, 6, 8 and 10 cylinder engines in all cars, trucks, vans and SUV's
• Can also be used in heavy-duty applications as well as tractors, boats, RV's, motorcycles (including wet clutch), ATV's, lawn equipment
• In most cases the oil leak issue will be repaired with a single dosage. However, for best results and to prevent the problems from reoccurring, use with every other oil change, or once per year
• Use 1/2 bottle for smaller systems (3. 5 - 4. 4 quarts of oil), in larger systems use 1 bottle for every 6 quarts, in small engines use approximately 3oz to every quart of oil

User questions & answers

Question:	I have an 2012 Audi q5 which burns alot of oil. Will this work on my car and solve the issue i am having
Answer:	It did not work for me. My 2011 Audi A4 burns a lot of oil, too. I will never buy another turbo...that is the problem.
Question:	If I have this already in my engine will it be safe to pour engine repair as well, mixing both products
Answer:	I have mixed Bar's products before and gotten away with it...... I would be very careful though. Keep an eye on the engine temperature and other indicators of trouble and then stop the engine if there is any sign of trouble . And by all means don't overfill the reservoirs.
Question:	Does this stuff have flake like specs in it like the radiator stop leak
Answer:	Thank you for your question, and for considering Bar's Leaks Oil Seal Engine Oil Burning & Leak Repair (part number OS-1) to help with your automotive needs. This professional strength stop leak uses synthetic polymers combined with premium seal restoring additives to create a long lasting repair. It does not contain any flakes or fibers as you might expect to see in a cooling system stop leak. If you have any other questions or we may be of further assistance, please feel free to contact our Technical Support Team at 1-800-345-6572. We are available to assist you from 8 am to 5 pm Eastern time, Monday through Friday.
Question:	Does it work to fix an oil leak from the head gasket, with oil leaking outward and along the outside of the engine, losing about half a quart/mo
Answer:	My car burns oil. It does not leak oil. This remedy did not work.

Product description

SealLube Positively Stops Existing Leaks In Any Fluid System: Gasoline engines, diesel engines, marine engines, farm tractors, hydraulic systems, manual transmissions, automatic transmissions, power steering units, rack and pinion, jacks, heavy equipment, differentials, refillable shock absorbers, gear cases, I/O drives, PTO valves and air conditioners. Do not use in brake systems. The SealLube formula quickly revitalizes hard, shrunken, leaking rubber seals to original condition and prolongs the life of all seals to prevent future leaks. SealLube added to any system will prevent future leaks by conditioning even new seals. Does not work on paper or cork. Compatible with all manufacturers’ fluids, both conventional and synthetic. DIRECTIONS: 1. With engine or equipment not operating, add 1 oz. of SealLube per quart capacity to fluid reservoir, crankcase, or oil sump (one Gallon of SealLube treats up to 128 Quarts / 32 Gallons). 2. Start engine and drive vehicle or operate equipment as normal. The SealLube formula quickly revitalizes hard, shrunken, leaking rubber seals to like new condition as the fluid circulates. Since SealLube does not contain petroleum distillates, which can destroy seals after temporarily expanding them, it is safe to repeat the treatment if the seal/system ever leaks in the future.

• STOPS LEAKS: GASOLINE ENGINES, DIESEL ENGINES, HYDRAULIC SYSTEMS, TRANSMISSIONS, POWER STEERING UNITS, RACK AND PINION, DIFFERENTIALS, A/C AND MUCH MORE!
• RESTORES FLEXIBILITY, ELASTICITY AND TENSILE STRENGTH OF ALL RUBBER SEALS
• ONE GALLON OF SEALLUBE TREATS UP TO 128 QUARTS / 32 GALLONS
• PROUDLY MADE IN THE USA
• 100% MONEY BACK GUARANTEE

User questions & answers

Question:	Do you use the full 15 oz when putting in car
Answer:	Yes I did put it in my V6 - 1994 Chevy Camaro.
Question:	i have a 2012 chevy impala ltz with a slight oil leak that takes 6 qts of oil , i can of hi gear treats up to 5 qts of oil, what do i put in for 6qts
Answer:	You should be OK with just one bottle of the Hill Gear Regards,Greg

Product description

Bardahl Gear Oil Additive plus Stop Leak is a specially formulated additive for manual transmission, gearboxes and differentials. It extends the life of gear oil. It also fortifies OEM additives with Bardahl’s Polar Attraction Formula, providing a protective film that reduces wear. Gear Oil Additive plus Stop Leak also has a seal conditioner to prevent and eliminate leaks.

• Extends gear oil life
• Conditions seals and eliminates leaks
• Protects against gear wear and reduces gear noise
• Improves synchronizer performance, decreasing shift effort in manual transmissions
• Suitable for use in all types of manual transmissions and differentials that specify standard automotive gear oils or motor oil as the lubricant

User questions & answers

Question:	will it work in troybilt tiller gearbox
Answer:	I'm sure it would, it worked on my toro snow blower 1028. THANK YOU
Question:	Does this work for rear differential seals
Answer:	The answer is, I'm not sure. The previous owner of my car put very heavy oil in the rear diff maybe to stop it leaking, but not entirely. So I drained it,put the correct oil in and the Bardhal. The leak is no worse than before, which suggests it probably has had some effect. Hope this helps. Personally, I would put it in as it provides additional protection, plus, I checked the oil level after 3 months, and despite the drip, it had not gone down.

Product features

Advantages and Uses of Bardahl All-u-need! Gear Oil Additive + Stop Leak

Bardahl All-u-need! Gear Oil Additive + Stop Leak is specially formulated for manual transmissions, gearboxes, and differential to extend the life of the gear oil. Manual transmissions and differentials are subjected to varying loads depending on the vehicle and operating conditions. Gear loading is typically highest at start-up and during gear changes. Shock loading is often a problem with heavily loaded vehicles operating under extreme conditions, such as off-road, construction or farm applications.

This All-u-need! solution is based on proprietary 'polar attraction' technology that coats metal with a thin film. The film lubricates the system at pressures and temperatures that cause ordinary hydrocarbon lubricants to break down while special seal conditioners improve seal pliability to prevent and stop fluid leaks. Inadequate lubrication can cause excessive heat build-up, bearing howl, gear noises and eventually lead to damage and costly repairs.

How To Use Bardahl All-u-need! Gear Oil Additive + Stop Leak

Add contents to the gear box or differential in place of an equal amount of regular lubricant. If used to reinforce oils in general industrial applications, add at a 10% treatment ratio. This All-u-need! solutions in compatible with all gear oils, including synthetics. Dispose of any used or unused solution in accordance with you local, state and federal regulations.

Product description

**Verify part fits before purchasing**

Specs:

Description: Hyd Oil Booster and Stop Leak

Add to any hydraulic fluid at a treat rate of 5%-10%; using up to 20% if necessary

Adds life to pumps, rams and seals

Adds lubricity and thermal stability to any hydraulic oil

Does not contain harmful solvents

Inexpensive solution to your hydraulic problems

Perfect preventative maintenance for new equipment and perfect solution for worn hydraulics and transmission in older equipment

Priced per pail, sold per pail

Renews worn fluids, removes varnish from wet brakes and clutches, stopping slippage and lowering operating temperatures

Restores full hydraulic pressure to a worn system

Will condition seals to stop leaks and restore load pressure

Packaging type: OEM package

Size: 5 gallon

Replaces OEM Numbers:

Lucas Oil: 10039

• Specs: Description: Hyd Oil Booster and Stop Leak, Add to any hydraulic fluid at a treat rate of 5%-10%; using up to 20% if necessary, Adds life to pumps, rams and seals, Adds lubricity and thermal stability to any hydraulic oil, Does not contain harmful solvents, Inexpensive solution to your hydraulic problems, Perfect preventative maintenance for new equipment and perfect solution for worn hydraulics and transmission in older equipment, Priced per pail, sold per pail, Renews worn fluids
• Replaces OEM Numbers: Lucas Oil: 10039
• Stens 1 year warranty ensures reliability and performance for every part. We're confident that our products will work flawlessly, but in a rare case that it does not, we'll replace it anytime within one year of your order.
• Stens branded parts are trusted by professional dealers to perform OEM quality repairs. The Stens name is featured on all Genuine Stens product packaging.

Product description

Lucas Engine Oil Stop Leak is an all new formulation of Lucas additives and very specific base stocks designed to stop seal leaks in engines! Reduces engine noise and oil consumption, while raising oil pressure Renews worn seals with no risk of damage or eventual corrosion Compatible with petroleum, semi-synthetic and full synthetic motor oils.

• For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.
• Compatible with petroleum, semi-synthetic and full synthetic motor oils
• Renews worn seals with no risk of damage or eventual corrosion
• Reduces engine noise and oil consumption, while raising oil pressure

Product description

There's no good news when it comes to oil leaks, especially stubborn ones. You can't afford to have your car (or your wallet) sidelined by downtime and a costly repair bill. Bar's Leaks Professional Main Seal Motor Oil Leak Repair is a commercial-grade solution to solve your vehicle's oil leaks. Trust the brand relied on by over 100 million customers since 1947. Bar’s Leaks is the #1 name when it comes to chemical tools for oil leaks( rear main seal) and other leak-related problems. Our products are the gold standard in the industry, trusted by consumers, OEM and automotive technicians alike. And they’re simple to use, too. Requiring no special mechanical knowledge, anyone can install our Main Seal Oil Leak Repair solution. We design our products to be effective, safe and easy to use - . At Bar’s Leaks, we believe in helping you solve your own vehicle problems when a full (physical) repair isn’t cost-effective or affordable. And we’ve been doing this for nearly 70 years. Here’s the deal: engine seals harden and shrink from the plasticizers being removed over time and as the miles add up. This professional strength synthetic stop leak technology revitalizes these worn seals and gaskets to restore them to like-new performance. This is the strongest formula to stop main seal, timing cover seal, cam seal, crankshaft seal, oil pan, valve cover and all other oil leaks. It’s a pro-grade solution meant for the most stubborn oil leak problems. Bar’s Leaks: the fastest, safest way to get your show back on the road, . We’ve been proving that since 1947, and no other brand even comes close.

• Safe and easy to use, and works quickly
• Best stop leak formula money can Buy
• Synthetic blend, for all engines
• Repair leaking front and rear main seals
• Stop cam and timing seal leaks

User questions & answers

Question:	Can this be used on a motorcycle
Answer:	Thank you for your question, and for considering Bar's Leaks Main Seal Motor Oil Leak Repair (part number MS-1) to help with an oil leak on your motorcycle. You can use this product for your motorcycle, but you will need to adjust the dosage accordingly. For use in small engines such as ATV, Motorcycles (including wet clutch), lawn equipment, tractors, etc., we recommend you use 5 ounces of MS-1 for each quart of oil capacity. If you have any other questions or we can be of any further assistance, please feel free to call our Tech Support Team at 1-800-345-6572. We are here to assist you Monday through Friday, from 8 am to 5 pm, Eastern time.
Question:	does this stop blue smoke
Answer:	I doubt it will seal rings, but could seal valve guide seals where oil could leak down and into the cylinders. It is very good for seal leaks such as front and rear seals, etc.
Question:	Will this product work on rear main rope seals? This car is only driven 300-400 miles a year. thx
Answer:	Thank you for your question and for considering Bar's Leaks to help with your automotive needs. The product you are asking about - Bar's Leaks Main Seal Motor Oil Leak Repair (part number MS-1). Yes, this product can help with leaking rope seals. One bottle of MS-1 will treat oil capacity from 5 to 7 quarts. Use 1/2 bottle for oil capacity from 3.5 to 4.9 quarts, or 1 bottle for every 6 quarts of oil capacity in larger engines. For smaller engines, such as ATV, motorcycle (including wet clutch), lawn equipment, tractors, etc., use approximately 5 ounces of MS-1 for every quart of oil capacity. If you have any other questions or would like additional information, please feel free to call our Tech Support team at 1-800-345-6572. We are here to assist you Monday through Friday, from 8 am to 5 pm Eastern time.
Question:	will this work on power stearing and hydraulic leak on a tractor
Answer:	Thanks for considering Bar's Leaks to help with your tractor. The product you are inquiring about - Main Seal Motor Oil Leak Repair (part number MS-1) is designed for use in engine oil, and we do not recommend you use it with power steering or hydraulic fluid. If the power steering system in your tractor is hydraulic, we recommend you try our part number HJ12 - Bar's Leaks Jack Oil with Stop Leak. This product is compatible with all petroleum based, mineral oil, and synthetic hydraulic fluids. One bottle will treat 2 to 3 quarts of oil, so depending on fluid capacity, you will need to adjust the dosage you use accordingly. For more information, please feel free to call our Bar's Leaks Tech Support team. We can be reached at 1-800-345-6572, and are available to help you from 8 am to 5 pm Eastern time, Monday through Friday.

Product features

Is Your Vehicle a Good Candidate for this Solution?

Main Seal Motor Oil Leak Repair employs twice the performance of other oil stop leak brands. This product can be added at anytime and used with all types of motor oil and engines.

When should one used Main Seal Motor Oil Leak Repair?

At first signs of an oil leak or on a vehicle with high mileage to prevent a leak. Main Seal Motor Oil Repair uses a two part formula of synthetic polymers and a Seal Restorer to seal leaks and restore elasticity to the seals.

Does Main Seal Motor Oil Leak Repair Actually work?

Absolutely! We stand behind our product with an expert team of Chemical Engineers and over 70 years dedicated to helping you get back on the road again as quickly, affordably and easily as possible.

About Bar's Leaks

Bar’s Leaks is more than just a stop-leak company. We are a team of enthusiasts and experts who create memorable experiences with each and every one of our customers. With nearly 70 years of experience in helping everyday automobile owners repair leaks, we have the track record of success and long history that demonstrates our commitment and passion to helping drivers of all experience levels. You’ll see that our passion shines through in everything we do.

Each individual Bar’s Leaks product is formulated and manufactured right here in the U.S.A. We’re committed to creating fast and affordable products that fit perfectly into your lifestyle and budget. Choose Bar’s Leaks, so you can discover just how simple automotive maintenance can be when you have the right tools.

Product description

Hydraulic Oil Additive - Booster and Stop Leak - 1 gal - Each

• Lucas Hydraulic Oil Booster & Stop Leak; Gallon (10018)