Is engine oil dye profitable to sell on Amazon United States?

The niche generates $175K/yr across 8 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -18.6%. Flapen's verdict: Skip it (44/100).

How competitive is the engine oil dye niche?

7 brands and 56 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 92% of demand.

What do buyers complain about in engine oil dye?

Top complaints mined from reviews: Leak-Proof, Brightness/Shine/Glow, Color. The return rate is 1.5%.

When does demand for engine oil dye peak?

Demand peaks in Mar; the busiest month runs 1.5× the quietest.

What does it cost to enter the engine oil dye niche?

Listings span $7.59–$33.87; the average listing price is $18.88 (sweet spot $15–$100). The average incumbent carries 885 reviews — the moat a new listing must climb.

engine oil dye

Skip it

A concentrated shelf (top 5 take 89% of clicks) — this niche doesn't clear our bar today.

Conversion

Incredible12.7%

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

Returns

Great1.5%

return rate — above 5% kills the launch gate

Avg price

Great$18.88

avg listing price — sweet spot $15–$100

Price range

Good$7.59–$33.87

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

Review moat

Good884.75

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Market size

Okay$175K

$175K/yr · 73K searches

Brand share

Bad92%

top-5 brand share — brand-locked demand

Growth

Bad-18.6%

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

Competition

Bad89%

top-5 click share — a locked-up shelf

According to Flapen's Amazon United States niche tracking, engine oil dye is a $175K/yr Amazon United States market (73K searches/yr). The top 5 brands hold 92% of demand. Demand peaks in Mar. Verdict: Skip it — 44/100.

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

engine oil dye market data

Units sold / yr: 10K–13K; avg 1,250–1,500/product
Revenue / yr: $189K–$236K; units × avg price
Conversion rate: 12.7%
Avg BSR: #34
Page quality: 0%
Prime: 100%
Sponsored: 75%
Out of stock: 4.8%
Avg brand age: 83 months
Avg seller age: 165 days

Competition & brand share

The top 5 products capture 89% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 flat

Sellers

Top-5 brand share

92%

Top 20: 100%

Top-5 click share

89%

Top 20: 100%

Open market

A/C Pro46%
TSI Supercool17%
Yesibeike14%
LEAKFINDER8%
TRACER6%
ACDelco5%
Open — no brand owns it (1 brand, 3%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -18.6% search growth over the last 90 days.

Peak months: Mar · busiest ÷ quietest = 1.5×

Open Trend

Top engine oil dye search terms

engine oil dye18K/yr -14.4%10.5% conv.
oil dye13K/yr -4.6%10.3% conv.
oil leak dye11K/yr -6.4%11.3% conv.
uv dye for oil leak11K/yr -31.1%11.6% conv.
oil uv dye4K/yr -13.9%13.5% conv.
uv oil dye4K/yr -28.0%14.5% conv.
engine oil uv dye3K/yr -26.5%14.2% conv.
engine oil leak dye3K/yr -27.3%10.7% conv.
oil dye leak detection5K/yr -57.5%12.2% conv.

All search terms

Top engine oil dye 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 8 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

A/C Pro Certified Auto Pro Oil and Fuel System UV Dye Leak Detection for Cars & Trucks & More 1 Oz 374CS Universal

A/C Pro$7.594.5★2,547 rev

Yesibeike Oil-Based UV Leak Detection Dye 150 ml for Dirty Engine Oil Precision Nozzle Works with Engine Oil ATF Fuel & Hydraulic Systems Low Odor Tamper-Evident Foil Seal

Yesibeike$14.324.1★27 rev

TSI Supercool TD8 Total Dye 8 oz (Self Measure Bottle)

TSI Supercool$24.984.6★964 rev

LEAKFINDER LF2008 Automotive Oil-Based Fluid Leak Detection Dye for Oil Fuel ATF and Power Steering Systems 8oz Ultraviolet Fluorescent Dye Twin-Neck Bottle Services up to 8 Vehicles

LEAKFINDER$33.874.5★104 rev

Tracer Products TP-3090-0601 Gas Engine Oil dye 1 Pack

TRACER$27.354.5★215 rev

Newest

by launch date

Yesibeike Oil-Based UV Leak Detection Dye 150 ml for Dirty Engine Oil Precision Nozzle Works with Engine Oil ATF Fuel & Hydraulic Systems Low Odor Tamper-Evident Foil Seal

Yesibeike$14.3227 rev

6mo ago

Lichamp AC Leak Detector Kit Automotive UV Oil Dye Leak Detection Kit Includes AC UV Light and Protective Glasses LA01

Lichamp$19.00297 rev

3y ago

LEAKFINDER LF2008 Automotive Oil-Based Fluid Leak Detection Dye for Oil Fuel ATF and Power Steering Systems 8oz Ultraviolet Fluorescent Dye Twin-Neck Bottle Services up to 8 Vehicles

LEAKFINDER$33.87104 rev

8y ago

TSI Supercool TD8 Total Dye 8 oz (Self Measure Bottle)

TSI Supercool$24.98964 rev

13y ago

TSI Supercool P46-8D PAG Oil 46 Viscosity with UV Dye 8oz 1-Pack

TSI Supercool$9.331,974 rev

13y ago

What buyers say about engine oil dye

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

What buyers love

Leak-Proof31%

“Helped find a leak”

Quality-Overall18%

“Good Quality”

Advertised Vs Actual Product10%

“as advertised”

Value For Money9%

“Great value for the money to help keep the bike on the road”

Ease Of Use6%

“Ease of use”

Efficiency6%

“Works perfectly”

Brightness/Shine/Glow5%

“it lit up brightly”

Lubrication5%

“Also helps detecting oil level on the front axle with a. YELLOW”

Color4%

“Definitely worth it to say to customer hey we want to put this dye in your car”

Night Vision1%

“quite visible at night”

What buyers complain about

Leak-Proof28%

“And I have a huge leak”

Brightness/Shine/Glow11%

“My only wish is that it glowed more”

Color9%

“2 bottles and the dye is invisible”

Functionality-Overall7%

“my bottle definitely did not work or they have batch issues with their product”

Ease Of Use7%

“It is very tight to insert them”

Instructions/User Manual/Troubleshooting4%

“no instructions”

Value For Money2%

“Waste of money”

Lubrication2%

“Doesn't work when added to oil”

Top return reasons

Compatibility-Overall24%

Leak-Proof22%

Color9%

Advertised Vs Actual Product8%

Functionality-Overall6%

Value For Money6%

Display Colors4%

Size-Overall3%

Defective Material/Parts2%

Coolant2%

Common questions

Is engine oil dye profitable to sell on Amazon United States?: The niche generates $175K/yr across 8 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -18.6%. Flapen's verdict: Skip it (44/100).
How competitive is the engine oil dye niche?: 7 brands and 56 sellers compete. The top 5 products take 89% of clicks and top 5 brands hold 92% of demand.
What do buyers complain about in engine oil dye?: Top complaints mined from reviews: Leak-Proof, Brightness/Shine/Glow, Color. The return rate is 1.5%.
When does demand for engine oil dye peak?: Demand peaks in Mar; the busiest month runs 1.5× the quietest.
What does it cost to enter the engine oil dye niche?: Listings span $7.59–$33.87; the average listing price is $18.88 (sweet spot $15–$100). The average incumbent carries 885 reviews — the moat a new listing must climb.