Often repairing an oil leak can be costly exercise but there are sometimes cheaper alternatives. You may have heard about oil stop leak products and they as the name suggests work by stopping oil leaks.
A special formulated liquid that is added to your engine to help seal leaks in various areas including the engine and transmission to name a few. It can be daunting to decide which oil stop leak will be most effective and we have reviewed our top options to help you out.
COMPARISON CHART
| IMAGE | PRODUCT | |
|---|---|---|
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1. Hapco Products – Pro-Seal – 8 oz.
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2. ATP AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle
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3. Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart
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4. BlueDevil Oil Stop Leak
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5. Bar’s Leaks Oil Seal Engine Oil Burning and Leak Repair
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1. Hapco Products – Pro-Seal – 8 oz.
Specification
| Material | Rubber |
| Brand | Hapco Products Co. |
| Item Weight | 8 Ounces |
| Compatible Material | Rubber |
Features
- Easy-to-use treatment quickly restores the flexibility, elasticity and tensile strength of all rubber seals
- Does not contain petroleum distillates, which can harm or destroy rubber seals – 100% non-clogging
- Can also be added at any time as a seal conditioner to help prevent future leaks
- Compatible with all conventional and synthetic oils / fluids
Hapco Pro-Seal concentrated formula is guaranteed to stop existing leaks in any fluid system: Engines, transmissions, differentials, power steering, rack and pinion, rear axles, gear cases, reduction gears, trim tabs, pillow blocks, transfer cases, heavy equipment and any hydraulic system (jacks / cylinders / pumps). This easy-to-use treatment quickly restores the flexibility, elasticity and tensile strength of all rubber seals to stop current leaks.
WHAT WE LIKE
Works well and very quickly to seal leaks. You will have a noticeable difference in oil drops under your vehicle. Affordable option to avoid costly repairs. Reduces oil consumption by fixing leaks well and restoring it to its original capabilities. A small effective solution to have on hand.
WHAT WE DONT LIKE
This is a less viscous oil stop leak which may result in inconsistent results. You need to make sure to add the right amount of the product. Be careful not to add too much, it can soften the seals too much and blow them out.
PROS
- Works quickly to fix leaks
- Noticeable difference in oil levels
- Restores oil consumption to original capacity
- Small solution to have on hand
CONS
- Watery consistency
- Do not use too much
2. ATP AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle
Specification
| Item Weight | 1.58 ounces |
| Product Dimensions | 7 x 4.5 x 4 inches |
Features
- Professional strength fast acting resealer, stops leaks fast
- Rejuvenates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems
- Compatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil
- Does not contain petroleum distillates, will not over-swell or breakdown seals
AT-205 Re-Seal is a fast, effective and safe stop-leak for all rubber seals and gaskets. The exclusive formulation restores worn or dried out seals and is not harmful to internal bearings and components.
WHAT WE LIKE
Great little product to seal rubber seals in the engine like the head gasket and sump gasket. Seals smaller leaks effectively. No smoke to be seen after adding this oil stop leak. Fairly cheap solution to oil leaks.
WHAT WE DONT LIKE
You need to have driven 500 miles for it to work.This is a considerable distance to have to wait for a product to work. May cause more serious damage to your engine requiring costly repairs depending on your vehicle type it may not be compatible with all vehicles.
PROS
- Works well on rubber seals
- Seals smaller leaks effectively
- No smoke after use
- Fairly cheap option
CONS
- Need 500 miles for it to be effective
- Not compatible with all vehicle types
3. Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart
Specification
| Item Weight | 2.02 pounds |
| Product Dimensions | 3.3 x 3.3 x 11.75 inches |
Features
- 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
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. It is also an exceptional additive for worn and older engines, reducing engine noise and oil consumption while reducing oil pressure .
WHAT WE LIKE
This product helps greatly to repair smaller, old, hardened seals, but it doesn’t falsely advertise to bring about miraculous results in moderate to major issues. Reduces oil consumption with regular use. An inexpensive solution when compared to costly engine repairs. Compatible with a range of synthetic motor oils.
WHAT WE DONT LIKE
Tends to take a while to get the oil leak to stop so you may think it is not working at first. Large amount of white smoke can come out of your exhaust which is not ideal and may be a result of further issues.
PROS
- Repairs smaller leaks fairly well
- Reduces oil consumption
- Inexpensive solution
- Compatible with a range of other products
CONS
- Takes a while to be effective
- Large amount of white smoke after use
4. BlueDevil Oil Stop Leak
Specification
| Item Weight | 2.02 pounds |
| Product Dimensions | 3.3 x 3.3 x 11.75 inches |
Features
- Guaranteed to permanently seal seeping or dripping oil leaks
- Repairs and reconditioning rubber seals throughout any fluid oil system
- It is non-clogging and will not harm your engine.
- BlueDevil is safe and easy to use and is compatible with gasoline or diesel engines
BlueDevil offers a permanent solution with our engine oil stop leak solution that is proven to seal your leak and get you back on the road again. BlueDevil will seal leaks in any fluid systems that are seeping or dripping.
WHAT WE LIKE
Pour in BlueDevil Oil Stop Leak and let your vehicle idle for 2 hours and you will find your leak either fixed or significantly reduced. A good option as an oil leak solution for older vehicles. Significantly reduces oil consumption. Reduces burning oil as well, no more burnt oil smell.
WHAT WE DONT LIKE
This best oil stop leak may not be a permanent solution as some leaks can reoccur after some time after temporary reprieve. The consistency of this product is very thin almost like water and may not work as effectively.
PROS
- Works significantly well after 2 hours
- Good option for older vehicles
- Reduces oil consumption
- Reduces oil burning
CONS
- Not a permanent solution
- Very thin consistency
5. Bar’s Leaks Oil Seal Engine Oil Burning and Leak Repair
Specification
| Item Weight | 2.02 pounds |
| Product Dimensions | 3.3 x 3.3 x 11.75 inches |
Features
- A specially-engineered seal rejuvenating additive restores seal size, flexibility and elasticity lost due to engine heat, age and high mileage.
- An advanced seal polymer additive package works by building a polymeric film around the seal to help prevent excess oil from bypassing the seal during normal engine operation.
- A superior detergent and cleaning package can dissolve gunk and carbon on stuck piston oil rings freeing them up so they can work properly.
- Synthetic polymers can fill in small scratches and wear marks preventing oil from passing and being burned.
This premium quality synthetic blend works with all types of motor/engine oil including regular petroleum, high mileage, synthetic blends and fully synthetic formulas. 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.
WHAT WE LIKE
Fixes oil leaks effectively. Where oil consumption was previously very high this oil stop leak considerably reduces oil consumption. An affordable solution that is well worth it. If a leak is too large it will still be able to slow it down.
WHAT WE DONT LIKE
You may find that your car smokes for the first few days after use which may be rather concerning but on the whole it does subside. You have to drive 250 miles to get the full effect of this oil stop leak so it may look initially that it is not working.
PROS
- Fixes oil leaks effectively
- Reduces oil consumption
- Affordable solution
- Large leaks still slow down
CONS
- May cause smoking initially
- Need to drive 250 miles for effectiveness at times
Final Verdict
Costly repairs on your vehicle can be a pain and to avoid one of them a good oil stop leak product can literally save you 100’s if not 1000’s of Dollars. We have given you our top recommendations but our number oil stop leak is Bar’s Leaks Oil Seal Engine Oil Burning and Leak Repair. An affordable option that fixes oil leaks effectively, it can save you from costly engine repairs. With a well repaired leak you will see a noticeable difference in your oil consumption reducing significantly. It requires less time to see a noticeable reduction in leaks compared to other similar products. Even larger leaks will slow down substantially with this product. A good overall well performing oil stop leak that can help your car run effectively.
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