--- title: "hydraulic stop leak — Niche Verdict: Skip it (36/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/automotive/hydraulic-stop-leak" last_updated: "2026-07-10T02:39:09.398Z" locale: en meta: description: "a concentrated shelf (top 5 take 94% of clicks) — hydraulic stop leak doesn't clear our bar today." "og:description": "a concentrated shelf (top 5 take 94% of clicks) — hydraulic stop leak doesn't clear our bar today." "og:title": "hydraulic stop leak — Niche Verdict: Skip it (36/100) | Amazon United States - Flapen" --- Back to Flapen home # **hydraulic stop leak** **Skip it****36/100 ** a concentrated shelf (top 5 take 94% of clicks) — hydraulic stop leak doesn't clear our bar today. **Market/yr** **$97K** **Growth (1y)** **+103.8%** **Products** **7** **Brands** **3** was 5 a year ago **Sellers** **93** **Price range** **$13.40–$126.03** **Returns** **1.0%** **Rating** **4.3★** **Skip it** Scored 36/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **5** ×0.30 Growth **65** ×0.30 Competition **0** ×0.20 Quality gap **56** ×0.10 Returns **92** ×0.10 ## **Demand** Weekly Amazon search volume, last 8 weeks — +103.8% year over year. 17989.5May '26May '26May '26Jun '26Jun '26Jun '26Jun '26Jul '26 ## **Competition** - Lucas Oil81% - BlueDevil Products17% - Bar's Leaks3% The top 5 products capture 94% of clicks — a locked-up shelf that new listings rarely crack. 3 brands and 93 sellers compete here. **Brands** **3 **▼falling was 5 a year ago **Sellers** **93** **Top 5 brand share** **100%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![Hydraulic Oil Booster/STO](https://m.media-amazon.com/images/I/41WATi7hX-L.jpg) [**Hydraulic Oil Booster/STO**](https://www.amazon.com/dp/B000FW2N08) Lucas Oil$31.864.6★80945%▲rising 2 ![Lucas Oil 10019 Hydraulic Oil Booster and Stop Leak - 1 Quart White 32 Ounce](https://m.media-amazon.com/images/I/31dZwsO44JL.jpg) [**Lucas Oil 10019 Hydraulic Oil Booster and Stop Leak - 1 Quart White 32 Ounce**](https://www.amazon.com/dp/B0002JMLW4) Lucas Oil$13.404.6★94326%▼falling 3 ![BlueDevil Products Hydraulic Stop Leak 32 oz | Restores Seals & Stops Leaks in Hydraulic Systems | Safe for Pumps Cylinders & Valves](https://m.media-amazon.com/images/I/41AoNeonFxL.jpg) [**BlueDevil Products Hydraulic Stop Leak 32 oz | Restores Seals & Stops Leaks in Hydraulic Systems | Safe for Pumps Cylinders & Valves**](https://www.amazon.com/dp/B00D46NSTM) BlueDevil Products$23.884.3★62217%▼falling 4 ![Lucas Oil 10018 Hydraulic Oil Booster & Stop Leak - 1 Gallon (Pack of 4)](https://m.media-amazon.com/images/I/41kDb0tVckL.jpg) [**Lucas Oil 10018 Hydraulic Oil Booster & Stop Leak - 1 Gallon (Pack of 4)**](https://www.amazon.com/dp/B008RWA1EI) Lucas Oil$105.594.7★774%—flat 5 ![Hydraulic Oil Booster/Stop Leak/1x1/5 Gallon Pail](https://m.media-amazon.com/images/I/41n5dIW93-L.jpg) [**Hydraulic Oil Booster/Stop Leak/1x1/5 Gallon Pail**](https://www.amazon.com/dp/B00T3MOP34) Lucas Oil$126.033.0★13%▲rising 6 ![Lucas Oil Hydraulic Oil Booster and Stop Leak 1 gal Case of 4 P/N 10018-4](https://m.media-amazon.com/images/I/41EZUeYYWuL.jpg) [**Lucas Oil Hydraulic Oil Booster and Stop Leak 1 gal Case of 4 P/N 10018-4**](https://www.amazon.com/dp/B01M24GDPV) Lucas Oil$107.804.9★223%▲rising 7 ![Bars Leaks H60 Hydraulic Seal Stop Leak & Conditioner 32. Fluid_Ounces 1 Quart](https://m.media-amazon.com/images/I/41mVcnEuRSL.jpg) [**Bars Leaks H60 Hydraulic Seal Stop Leak & Conditioner 32. Fluid_Ounces 1 Quart**](https://www.amazon.com/dp/B005ETQD62) Bar's Leaks$16.354.3★2283%▼falling ## **Product shelf** All 7 tracked products in this niche. Top sellersNewestTrending [![Hydraulic Oil Booster/STO](https://m.media-amazon.com/images/I/41WATi7hX-L.jpg)**Hydraulic Oil Booster/STO** Lucas Oil**$31.86**4.6★809 reviews](https://www.amazon.com/dp/B000FW2N08) [![Lucas Oil 10019 Hydraulic Oil Booster and Stop Leak - 1 Quart White 32 Ounce](https://m.media-amazon.com/images/I/31dZwsO44JL.jpg)**Lucas Oil 10019 Hydraulic Oil Booster and Stop Leak - 1 Quart White 32 Ounce** Lucas Oil**$13.40**4.6★943 reviews](https://www.amazon.com/dp/B0002JMLW4) [![BlueDevil Products Hydraulic Stop Leak 32 oz | Restores Seals & Stops Leaks in Hydraulic Systems | Safe for Pumps Cylinders & Valves](https://m.media-amazon.com/images/I/41AoNeonFxL.jpg)**BlueDevil Products Hydraulic Stop Leak 32 oz | Restores Seals & Stops Leaks in Hydraulic Systems | Safe for Pumps Cylinders & Valves** BlueDevil Products**$23.88**4.3★622 reviews](https://www.amazon.com/dp/B00D46NSTM) [![Lucas Oil 10018 Hydraulic Oil Booster & Stop Leak - 1 Gallon (Pack of 4)](https://m.media-amazon.com/images/I/41kDb0tVckL.jpg)**Lucas Oil 10018 Hydraulic Oil Booster & Stop Leak - 1 Gallon (Pack of 4)** Lucas Oil**$105.59**4.7★77 reviews](https://www.amazon.com/dp/B008RWA1EI) [![Hydraulic Oil Booster/Stop Leak/1x1/5 Gallon Pail](https://m.media-amazon.com/images/I/41n5dIW93-L.jpg)**Hydraulic Oil Booster/Stop Leak/1x1/5 Gallon Pail** Lucas Oil**$126.03**3.0★1 reviews](https://www.amazon.com/dp/B00T3MOP34) [![Lucas Oil Hydraulic Oil Booster and Stop Leak 1 gal Case of 4 P/N 10018-4](https://m.media-amazon.com/images/I/41EZUeYYWuL.jpg)**Lucas Oil Hydraulic Oil Booster and Stop Leak 1 gal Case of 4 P/N 10018-4** Lucas Oil**$107.80**4.9★22 reviews](https://www.amazon.com/dp/B01M24GDPV) [![Bars Leaks H60 Hydraulic Seal Stop Leak & Conditioner 32. Fluid_Ounces 1 Quart](https://m.media-amazon.com/images/I/41mVcnEuRSL.jpg)**Bars Leaks H60 Hydraulic Seal Stop Leak & Conditioner 32. Fluid_Ounces 1 Quart** Bar's Leaks**$16.35**4.3★228 reviews](https://www.amazon.com/dp/B005ETQD62) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Leak-Proof**24% *“Not an expensive leak”* **Quality-Overall**18% *“Quality product”* **Advertised Vs Actual Product**11% *“It does the job”* **Value For Money**6% *“Much cheaper than replacing seals”* **Efficiency**6% *“Works Good”* **Functionality-Overall**6% *“Seems to be doing a good job”* **Lubrication**6% *“Good product used 3 bottles to stop hydraulic oil leaking in transmission”* **Assembly/Installation**3% *“Directions are easy”* **Durability**3% *“it lasts a long time”* **Maintenance And Repair**3% *“This fixed a very expensive repair”* ### **What buyers complain about ** **Functionality-Overall**22% *“Didn't work like it was supposed to do”* **Leak-Proof**22% *“in fact the other cylinder developed a leak also”* **Value For Money**17% *“It costs half as much in shipping to return it”* **Add-Ons/Attachments**11% *“Difficult to add”* **Thickness**6% *“Oil was so thick”* **Maintenance And Repair**6% *“I would like a replacement”* #### **Top return reasons**- Leak-Proof33% - Compatibility-Overall15% - Advertised Vs Actual Product12% - Value For Money12% - Certifications6% - Scratch Resistance3% - Adhesion/Stickiness3% - Functionality-Overall3% - Software/Application3% - Lubrication3%