Is ethanol shield fuel stabilizer profitable to sell on Amazon United States?

The niche generates $492K/yr across 9 tracked products. 90-day search growth is +5.9%. Flapen's verdict: Skip it (45/100).

How competitive is the ethanol shield fuel stabilizer niche?

5 brands and 96 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in ethanol shield fuel stabilizer?

Top complaints mined from reviews: Leak-Proof, Water Resistance, Value For Money. The return rate is 0.2%.

When does demand for ethanol shield fuel stabilizer peak?

Demand peaks in Sep–Oct; the busiest month runs 2.5× the quietest.

What does it cost to enter the ethanol shield fuel stabilizer niche?

Listings span $6.93–$72.35; the average listing price is $33.90 (sweet spot $15–$100). The average incumbent carries 1,817 reviews — the moat a new listing must climb.

ethanol shield fuel stabilizer

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.2%

return rate — above 5% kills the launch gate

Avg price

Incredible$33.90

avg listing price — sweet spot $15–$100

Price range

Great$6.93–$72.35

cheapest to priciest tracked listing — scored on the share inside $15–$100

Conversion

Good6.0%

search→purchase rate — share of searches ending in a sale

Market size

Good$492K

$492K/yr · 243K searches

Review moat

Okay1,817.11

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+5.9%

90-day search growth — must beat 0% to launch

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad88%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, ethanol shield fuel stabilizer is a $492K/yr Amazon United States market (243K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Sep–Oct. Verdict: Skip it — 45/100.

Data updated Jul 9, 2026 · scored weekly · How we score niches

ethanol shield fuel stabilizer market data

Units sold / yr: 15K–20K; avg 1,500–2,000/product
Revenue / yr: $509K–$678K; units × avg price
Conversion rate: 6.0%
Avg BSR: #62
Page quality: 0%
Prime: 89%
Sponsored: 44%
Out of stock: 0.0%
Avg brand age: 97 months
Avg seller age: 156 days

Competition & brand share

The top 5 products capture 88% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

88%

Top 20: 100%

Open market

Ethanol Shield59%
STA-BIL28%
Rotary5%
AGEGDXW4%
Lucas Oil3%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +5.9% search growth over the last 90 days.

Peak months: Sep, Oct · busiest ÷ quietest = 2.5×

Open Trend

Top ethanol shield fuel stabilizer search terms

ethanol shield150K/yr +6.0%5.8% conv.
ethanol shield fuel stabilizer90K/yr +6.9%5.9% conv.
ethanol shield fuel additive2K/yr -14.5%4.4% conv.

All search terms

Top ethanol shield fuel stabilizer products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 9 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Ethanol Shield Fuel Stabilizer 24 oz (2 Pack) Keeps Fuel Fresh Gasoline Treatment Fuel Additive That Protects Fuel System Gas Stabilizer for Fuel Storage Antioxidant and Anticorrosive

Ethanol Shield$36.524.8★910 rev

STA-BIL 360 Marine Fuel System Treatment 32 oz

STA-BIL$22.254.8★8,043 rev

Ethanol Shield Fuel Stabilizer 1 Gallon (128 oz) Prevents Corrosion - Gasoline Treatment that Protects Fuel System- Fuel Saver - Treats up to 1280 Gallons.

Ethanol Shield$72.354.8★354 rev

Rotary Ethanol Shield 24 Oz.

Rotary$30.404.9★89 rev

Ethanol Shield Gasoline Fuel Stabilizer 4 oz.

AGEGDXW$16.674.5★60 rev

Newest

by launch date

Ethanol Shield Fuel Stabilizer 8 oz CASE of 9. Prevents Corrosion - Gasoline Treatment That Protects Fuel System- Fuel Saver - Each 8 oz Bottle Treats up to 80 gallons.

Ethanol Shield$71.2326 rev

1y ago

Ethanol Shield Fuel Stabilizer 24 oz (2 Pack) Keeps Fuel Fresh Gasoline Treatment Fuel Additive That Protects Fuel System Gas Stabilizer for Fuel Storage Antioxidant and Anticorrosive

Ethanol Shield$36.52910 rev

2y ago

Ethanol Shield MARINE Fuel Stabilizer & Preservative - 2 PACK (2-24 oz bottles) - Full Fuel Cleaner - Fuel Injector Cleaner - Removes Water- Protects Fuel System - Each bottle treats 240 gallons

Ethanol Shield$37.3181 rev

2y ago

Rotary Ethanol Shield 24 Oz.

Rotary$30.4089 rev

8y ago

STA-BIL 360 Protection Ethanol Treatment and Fuel Stabilizer - Prevents Corrosion - Prevents Ethanol Damage - Cleans Entire Fuel System - Treats 5 Gallons 4 fl. oz. (22295)

STA-BIL$6.936,674 rev

8y ago

What buyers say about ethanol shield fuel stabilizer

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall26%

“Much Better Than Sta-bil”

Fuel Efficiency17%

“Better gas mileage”

Advertised Vs Actual Product16%

“As advertised”

Value For Money10%

“Reasonable price”

Ease Of Use4%

“Very useful”

Water Resistance3%

“this was hands down the best at absorbing the water”

Durability3%

“I have used ethanol shield for a couple of years and had no problems last spring with my zero turn, 2 push mowers, chainsaw, 2 blowers, and 2 weed eaters all fired right up last spring”

Measurement/Reading Accuracy3%

“Bottle is perfect for measuring out the right amount”

Ease Of Cleaning2%

“spark plugs run cleaner”

Efficiency2%

“This stuff really works well”

What buyers complain about

Leak-Proof28%

“One of the bottles has a leak”

Water Resistance11%

“No more water”

Value For Money11%

“a little spendy though”

Functionality-Overall11%

“Comparing Ethanol Shield to stabil 360 it works stabil doesnt”

Motor Issues11%

“Our gas will ruin or engines”

Size-Overall6%

“Small engines”

Rusts/Corrodes3%

“Its a small price to pay to prevent corrosion”

Fuel Efficiency3%

“Ethanol is brutal on fuel systems”

Top return reasons

Size-Overall28%

Leak-Proof24%

Value For Money19%

Functionality-Overall11%

Motor Issues7%

Compatibility-Overall7%

Smell2%

Advertised Vs Actual Product2%

Common questions

Is ethanol shield fuel stabilizer profitable to sell on Amazon United States?: The niche generates $492K/yr across 9 tracked products. 90-day search growth is +5.9%. Flapen's verdict: Skip it (45/100).
How competitive is the ethanol shield fuel stabilizer niche?: 5 brands and 96 sellers compete. The top 5 products take 88% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in ethanol shield fuel stabilizer?: Top complaints mined from reviews: Leak-Proof, Water Resistance, Value For Money. The return rate is 0.2%.
When does demand for ethanol shield fuel stabilizer peak?: Demand peaks in Sep–Oct; the busiest month runs 2.5× the quietest.
What does it cost to enter the ethanol shield fuel stabilizer niche?: Listings span $6.93–$72.35; the average listing price is $33.90 (sweet spot $15–$100). The average incumbent carries 1,817 reviews — the moat a new listing must climb.