engine oil analysis kit
Skip itA small market ($34K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$37.51avg listing price — sweet spot $15–$100
Price range
Incredible$22.52–$86.72cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great111.08avg incumbent reviews — the moat a new listing must climb
Returns
Great1.3%return rate — above 5% kills the launch gate
Quality gap
Good4.3★avg incumbent rating — lower means beatable quality
Conversion
Okay2.1%search→purchase rate — share of searches ending in a sale
Brand share
Bad91%top-5 brand share — brand-locked demand
Competition
Bad74%top-5 click share — a locked-up shelf
Growth
Bad-17.2%90-day search growth — must beat 0% to launch
Market size
Bad$34K$34K/yr · 42K searches
According to Flapen's Amazon United States niche tracking, engine oil analysis kit is a $34K/yr Amazon United States market (42K searches/yr). The top 5 brands hold 91% of demand. Verdict: Skip it — 42/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
engine oil analysis kit market data
- Units sold / yr
- 2K–2K
- avg 100–250/product
- Revenue / yr
- $56K–$75K
- units × avg price
- Conversion rate
- 2.1%
- Avg BSR
- #674
- Page quality
- 0%
- Prime
- 85%
- Sponsored
- 85%
- Out of stock
- 1.2%
- Avg brand age
- 49 months
- Avg seller age
- 185 days
Competition & brand share
The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.Brands
8 flat
Sellers
20
Top-5 brand share
91%
Top 20: 100%
Top-5 click share
74%
Top 20: 100%
Open market
6%
- Under My Hood49%
- Wix23%
- RALBIL7%
- KAISAL7%
- THE FRYOILSAVER COMPANY6%
- LUBEFLEX4%
- Open — no brand owns it (2 brands, 6%)
Demand & seasonality
Weekly Amazon search volume, last 88 weeks — -17.2% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top engine oil analysis kit search terms
- oil analysis kit15K/yr
- oil test kit7K/yr
- oil sample kit5K/yr
- engine oil analysis kit8K/yr
- oil analysis test kit3K/yr
- oil testing kit2K/yr
- oil sample test kit2K/yr
Top engine oil analysis kit 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.
All 13 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Oil Analysis Premier Kit by Under My Hood with return postage included
Under My Hood$30.084.1★400 rev
WIX Filters - 24077 Oil Analysis Kit Pack of 1
Wix$24.874.0★216 rev
Engine Oil Tester Gasoline & Diesel Engine Oil Quality Tester 50-Inch Extended Probe & Fast Response High-Precision Analysis Kit with 2.8In LCD Display Temp Display for Most Vehicles
RALBIL$34.834.9★18 rev
Fryer Oil Test Kit - Visual Two Color Analysis - Deep Fryer Oil Analysis Kit w/Eye Dropper includes MirOil Fry Powder - Monitor Grease Quality for Kitchen Restaurant Food Truck - by FryOilSaver Co.
THE FRYOILSAVER COMPANY$37.424.5★162 rev
Oil Analysis Starter Kit Including Test Kits tubing and Sample Pump
Under My Hood$86.724.3★33 rev
Newest
by launch dateEngine Oil Tester Gasoline & Diesel Engine Oil Quality Tester 50-Inch Extended Probe & Fast Response High-Precision Analysis Kit with 2.8In LCD Display Temp Display for Most Vehicles
RALBIL$34.8318 rev
YUANRI Engine Oil Tester Gasoline & Diesel Engine Oil Quality Tester 50-Inch Extended Probe Engine Oil Analyzer with 2.8 LCD Fast Respons for Vehicles Motorcycle
YUANRI$32.672 rev
Engine Oil Tester Gasoline & Diesel Engine Oil Quality Tester Detector Analysis Kit High-Precision Car Oil Diagnostic Tool with 50inch Flexible Probe Identifier & Sound Prompt 2.8in Backlit Display
KAISAL$34.95142 rev
Engine Oil Tester Gasoline & Diesel Engine Oil Quality Tester Analyzer Detector High-precision Car Engine Oil Diagnostic Tool with 50inch Flexible Probe Identifier&Sound Prompt 2.8in Backlight Display
KAISAL$37.24142 rev
LUBEFLEX Oil Sampling Bottle - Made in USA - Pack of 6 Oil Analysis Sampling Clear Plastic Bottle 4 oz (120 ml) Capacity with 38-400 Cap Size - FDA Compliant and BPA Free
LUBEFLEX$25.0058 rev
Trending
90-day click momentumYUANRI Engine Oil Tester Gasoline & Diesel Engine Oil Quality Tester 50-Inch Extended Probe Engine Oil Analyzer with 2.8 LCD Fast Respons for Vehicles Motorcycle
YUANRI$32.674.6★
Engine Oil Tester Gasoline & Diesel Engine Oil Quality Tester 50-Inch Extended Probe & Fast Response High-Precision Analysis Kit with 2.8In LCD Display Temp Display for Most Vehicles
RALBIL$34.834.9★
Engine Oil Tester Gasoline & Diesel Engine Oil Quality Tester Detector Analysis Kit High-Precision Car Oil Diagnostic Tool with 50inch Flexible Probe Identifier & Sound Prompt 2.8in Backlit Display
KAISAL$34.954.5★
Engine Oil Tester Gasoline & Diesel Engine Oil Quality Tester Analyzer Detector High-precision Car Engine Oil Diagnostic Tool with 50inch Flexible Probe Identifier&Sound Prompt 2.8in Backlight Display
KAISAL$37.244.5★
Under My Hood Oil Analysis Premier Sample Pump with Storage Case and 25 of LDPE Tubing
Under My Hood$54.084.1★
What buyers say about engine oil analysis kit
What buyers praise and complain about, mined from review topics.What buyers love
“Good quality built device”
“Easy to use”
“Works good so far”
“The readings are accurate”
“The price seems fair”
“It does what it claims”
“The build feels solid”
“new good quality filter”
“Its the safety of yourself”
“But it gave me the same 100%”
What buyers complain about
“QUALITY CONTROL MUST HAVE BEEN OFF THAT DAY”
“It is hard to tell the accuracy. yet”
“won't fit in”
“Would have been helpful to learn this in the description”
“shear out to be thinner”
“as the batteries kept popping out”
“Difficult to remove probe from dipstick tube also”
“rates it not acceptable at 30%”
“Not working”
“It smelled mostly like oil”
Top return reasons
Common questions
- Is engine oil analysis kit profitable to sell on Amazon United States?
- The niche generates $34K/yr across 13 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -17.2%. Flapen's verdict: Skip it (42/100).
- How competitive is the engine oil analysis kit niche?
- 8 brands and 20 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 91% of demand.
- What do buyers complain about in engine oil analysis kit?
- Top complaints mined from reviews: Quality-Overall, Measurement/Reading Accuracy, Size-Overall. The return rate is 1.3%.
- When does demand for engine oil analysis kit peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the engine oil analysis kit niche?
- Listings span $22.52–$86.72; the average listing price is $37.51 (sweet spot $15–$100). The average incumbent carries 111 reviews — the moat a new listing must climb.