rear main seal stop leak
Skip it40/100a small market ($69K/yr) — rear main seal stop leak doesn't clear our bar today.
Market/yr
$69K
Growth (1y)
+132.7%
Products
9
Brands
6
was 4 a year ago
Sellers
89
Price range
$9.55–$198.26
Returns
0.6%
Rating
4.3★
Skip it
Scored 40/100 across market size, growth, competition, quality gap, and returns.
Demand
Weekly Amazon search volume, last 104 weeks — +132.7% year over year.Seasonality
Monthly demand index across the year — 1.00 is average.No pronounced peak months · busiest ÷ quietest = 1.5×
Competition
- BlueDevil Products42%
- Bar's Leaks31%
- atp automotive12%
- XADO8%
- Lucas Oil5%
- Liqui Moly2%
- Other0%
The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack. 6 brands and 89 sellers compete here.
Brands
6 rising
was 4 a year ago
Sellers
89
Top 5 brand share
98%
Product shelf
All 9 tracked products in this niche.
Bars Leaks Rear Main Seal Repair 16.9 oz
Bar's Leaks
$9.554.2★3,146 reviews
BlueDevil Products 00234 Rear Main Sealer - 8 Ounce
BlueDevil Products
$15.104.1★3,553 reviews
ATP Automotive AT-205 Re-Seal Stops Leaks 8 Ounce Bottle 1-Pack
atp automotive
$21.014.5★21,809 reviews
BlueDevil Products 49499 Oil Stop Leak - 8 Ounce
BlueDevil Products
$18.924.1★3,440 reviews
BlueDevil Products 00234 Rear Main Sealer - 8 Ounce (Pack of 12)
BlueDevil Products
$198.264.1★3,553 reviews
XADO ATOMEX Oil Additive Stop Leak Engine - Restore Seal and Gaskets Treatment for Car Engine High Mileage or Rear Main Seal Best Stopper Leaks Reseal (Bottle 250 ml)
XADO
$21.934.2★368 reviews
Lucas Oil 10278 Engine Oil Stop Leak - 1 Quart
Lucas Oil
$12.044.6★1,346 reviews
LM 1005 Oil Leak Stop 300 ml
Liqui Moly
$20.194.4★7,512 reviews
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Stops leaks”
“Its a reliable solution that truly delivered on its promises”
“It works great”
“Good price”
“Works as advertised”
“works great for low oil consumption cars such as Volkswagen in Pacific Northwest during the winter”
“Works great as temporary repair”
“Easy to use”
“It seems to genuinely assist with leaks around the filter area”
“Driveway clean and clear as ever”
What buyers complain about
“for being a slight leak”
“it did not work in my case”
“the price has more than doubled”
“would need to be replaced entirely”
“changed filter I hope I did not damaged my engine”
“It did not work as they claims”
“If I gave it a grade it would be a F+ Did not help at all”
“It's a solvent”
“disappointed lasted just a year it would appear”
“It formed sticky deposit causing intake manifold runner valve to fail in cold weather”
Top return reasons
- Leak-Proof45%
- Compatibility-Overall14%
- Functionality-Overall11%
- Advertised Vs Actual Product8%
- Value For Money6%
- Defective Material/Parts2%
- Motor Issues2%
- Maintenance And Repair2%
- Jamming/Clogging1%
- Design-Overall1%