10w30 diesel oil
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.6%return rate — above 5% kills the launch gate
Avg price
Incredible$40.82avg listing price — sweet spot $15–$100
Price range
Incredible$22.77–$69.13cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Okay+14.8%90-day search growth — must beat 0% to launch
Review moat
Okay2,304.57avg incumbent reviews — the moat a new listing must climb
Conversion
Okay3.2%search→purchase rate — share of searches ending in a sale
Market size
Okay$117K$117K/yr · 89K searches
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Competition
Bad92%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, 10w30 diesel oil is a $117K/yr Amazon United States market (89K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Oct. Verdict: Skip it — 39/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
10w30 diesel oil market data
- Units sold / yr
- 10K–13K
- avg 1,250–1,500/product
- Revenue / yr
- $408K–$510K
- units × avg price
- Conversion rate
- 3.2%
- Avg BSR
- #49
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 0%
- Out of stock
- 0.0%
- Avg brand age
- 75 months
- Avg seller age
- 152 days
Competition & brand share
The top 5 products capture 92% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 flat
Sellers
61
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
92%
Top 20: 100%
Open market
0%
- Shell Rotella82%
- Motorcraft14%
- Valvoline4%
Demand & seasonality
Weekly Amazon search volume, last 96 weeks — +14.8% search growth over the last 90 days.Peak months: Oct · busiest ÷ quietest = 1.8×
Top 10w30 diesel oil search terms
- rotella t6 10w3021K/yr
- 10w30 diesel oil21K/yr
- rotella 10w3010K/yr
- motorcraft 10w30 diesel oil12K/yr
- shell rotella t6 10w-308K/yr
- motorcraft diesel oil5K/yr
- rotella 10w30 diesel oil4K/yr
- 10w-30 diesel engine oil4K/yr
- ford 6.7 oil3K/yr
Top 10w30 diesel oil 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 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Shell Rotella T6 Full Synthetic 10W-30 Diesel Engine Oil 1 Gallon (3 Pack)
Shell Rotella$69.134.8★468 rev
MOTORCRAFT - Oil - Engine (XO10W305Q3SD)
Motorcraft$30.824.8★463 rev
Shell Rotella T5 Synthetic Blend 10W-30 Diesel Engine Oil 1 Gallon
Shell Rotella$22.774.7★1,314 rev
Shell Rotella T4 Triple Protection 10W-30 Diesel Engine Oil 1 Gallon (3 Pack)
Shell Rotella$46.984.6★212 rev
Shell Rotella T5 Synthetic Blend 10W-30 Diesel Engine Oil 1 Gallon (3 Pack)
Shell Rotella$67.674.7★1,314 rev
Newest
by launch dateShell Rotella T6 Full Synthetic 10W-30 Diesel Engine Oil 1 Gallon (3 Pack)
Shell Rotella$69.13468 rev
Shell Rotella T5 Synthetic Blend 10W-30 Diesel Engine Oil 1 Gallon
Shell Rotella$22.771,314 rev
Shell Rotella T4 Triple Protection 10W-30 Diesel Engine Oil 1 Gallon (3 Pack)
Shell Rotella$46.98212 rev
Shell Rotella T5 Synthetic Blend 10W-30 Diesel Engine Oil 1 Gallon (3 Pack)
Shell Rotella$67.671,314 rev
Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 1 Gallon
Shell Rotella$23.5412,007 rev
Trending
90-day click momentumShell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil 1 Gallon
Shell Rotella$23.544.8★
Shell Rotella T5 Synthetic Blend 10W-30 Diesel Engine Oil 1 Gallon
Shell Rotella$22.774.7★
Shell Rotella T4 Triple Protection 10W-30 Diesel Engine Oil 1 Gallon (3 Pack)
Shell Rotella$46.984.6★
Shell Rotella T6 Full Synthetic 10W-30 Diesel Engine Oil 1 Gallon (3 Pack)
Shell Rotella$69.134.8★
Valvoline Premium Blue One Solution SAE 10W-30 Diesel Engine Oil 1 GA
Valvoline$24.824.7★
What buyers say about 10w30 diesel oil
What buyers praise and complain about, mined from review topics.What buyers love
“Good value for amazing oil”
“Great deal”
“Seems to work as it should”
“Reliable product and a great value”
“Best thing for a diesel”
“Perfect timing for my oil changes”
“quieter”
“Perfect amount for my Cummins RAM”
“Put in my car no problem lol”
“Its easy to do”
What buyers complain about
“Others mentioned they received oil leaking”
“Refilled or used”
“Slippery and oily”
“Slippery and oily”
Top return reasons
Common questions
- Is 10w30 diesel oil profitable to sell on Amazon United States?
- The niche generates $117K/yr across 7 tracked products. 90-day search growth is +14.8%. Flapen's verdict: Skip it (39/100).
- How competitive is the 10w30 diesel oil niche?
- 3 brands and 61 sellers compete. The top 5 products take 92% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in 10w30 diesel oil?
- Top complaints mined from reviews: Leak-Proof, Product Condition, Grip. The return rate is 0.6%.
- When does demand for 10w30 diesel oil peak?
- Demand peaks in Oct; the busiest month runs 1.8× the quietest.
- What does it cost to enter the 10w30 diesel oil niche?
- Listings span $22.77–$69.13; the average listing price is $40.82 (sweet spot $15–$100). The average incumbent carries 2,305 reviews — the moat a new listing must climb.