5w30 conventional motor oil
Skip itBrand-locked demand (top 5 brands take 96% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.5%return rate — above 5% kills the launch gate
Avg price
Incredible$32.32avg listing price — sweet spot $15–$100
Price range
Great$6.37–$78.81cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good51%top-5 click share — leaders hold, buyers still browse
Conversion
Okay3.8%search→purchase rate — share of searches ending in a sale
Growth
Okay+7.2%90-day search growth — must beat 0% to launch
Review moat
Bad4,966.53avg incumbent reviews — the moat a new listing must climb
Market size
Bad$79K$79K/yr · 65K searches
Quality gap
Bad4.8★avg incumbent rating — lower means beatable quality
Brand share
Bad96%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, 5w30 conventional motor oil is a $79K/yr Amazon United States market (65K searches/yr). The top 5 brands hold 96% of demand. Verdict: Skip it — 44/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
5w30 conventional motor oil market data
- Units sold / yr
- 3K–4K
- avg 100–250/product
- Revenue / yr
- $97K–$129K
- units × avg price
- Conversion rate
- 3.8%
- Avg BSR
- #215
- Page quality
- 0%
- Prime
- 91%
- Sponsored
- 50%
- Out of stock
- 0.0%
- Avg brand age
- 98 months
- Avg seller age
- 150 days
Competition & brand share
The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.Brands
8 rising
Sellers
117
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
51%
Top 20: 87%
Open market
2%
- Quaker State27%
- Castrol24%
- Valvoline23%
- Pennzoil17%
- Barnesmith5%
- Motorcraft1%
- Open — no brand owns it (2 brands, 2%)
Demand
Weekly Amazon search volume, last 48 weeks — +7.2% search growth over the last 90 days.Top 5w30 conventional motor oil search terms
- quaker state 5w30 full synthetic motor oil14K/yr
- 5w30 conventional motor oil15K/yr
- 5w30 synthetic blend14K/yr
- quaker state 5w305K/yr
- quaker state4K/yr
- 5w30 motor oil conventional4K/yr
- 5w 30 conventional motor oil3K/yr
- quaker state oil3K/yr
- 5w-30 synthetic blend4K/yr
Top 5w30 conventional motor 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor Oil 5 Quart
Valvoline$20.594.8★28,037 rev
Quaker State Full Synthetic 5W-30 Motor Oil 5 Quart (3 Pack)
Quaker State$63.874.6★149 rev
Pennzoil High Mileage 5W-30 Motor Oil 1 Quart (6 Pack)
Pennzoil$25.584.8★576 rev
Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil 5 Quarts
Castrol$20.524.8★8,467 rev
Castrol GTX 10W-30 Conventional Motor Oil 5 Quarts
Castrol$20.814.8★4,417 rev
Newest
by launch date
Castrol GTX Full Synthetic 5W-30 Motor Oil 5 Quarts
Castrol$23.383,971 rev
Barnesmith University of Pennsylvania UPenn Quakers Adult Unisex Crewneck Sweatshirt Spirit Navy XX-Large
Barnesmith$43.13766 rev
Barnesmith University of Pennsylvania UPenn Quakers Adult Unisex Crewneck Sweatshirt Spirit Navy Medium
Barnesmith$42.62766 rev
Valvoline High Mileage 150K with Maxlife Plus Technology 5W-30 Motor Oil 5 Quart
Valvoline$28.251,708 rev
Quaker State Full Synthetic 5W-30 Motor Oil 5 Quart (3 Pack)
Quaker State$63.87149 rev
Trending
90-day click momentumBarnesmith University of Pennsylvania UPenn Quakers Adult Unisex Crewneck Sweatshirt Spirit Navy Medium
Barnesmith$42.624.7★
Quaker State Motor Oil 10W-40 5 Quart
Quaker State$20.994.7★
Barnesmith University of Pennsylvania UPenn Quakers Adult Unisex Crewneck Sweatshirt Spirit Navy XX-Large
Barnesmith$43.134.7★
Castrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil 5 Quarts
Castrol$16.834.8★
Quaker State Full Synthetic 5W-30 Motor Oil 1 Quart (6 Pack)
Quaker State$44.554.6★
What buyers say about 5w30 conventional motor oil
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent value”
“great product, as advertised”
“Best oil”
“As advertised”
“good motor oil for high mileage vehicles”
“works well”
“Easy to use”
“Functions great and my engine to feels smooth”
“clean no damage no leaks”
“Perfect fit for OEM”
What buyers complain about
“arrived leaking”
“Oil is not oil”
“It would of blown up my engine”
“a bit pricey”
“Waste”
“my car's engine failed”
“until your boyfriend forgets to tighten the oil filter”
“Not full synthetic”
“Oil weight”
“Took a little to get use to box”
Top return reasons
Common questions
- Is 5w30 conventional motor oil profitable to sell on Amazon United States?
- The niche generates $79K/yr across 32 tracked products. 90-day search growth is +7.2%. Flapen's verdict: Skip it (44/100).
- How competitive is the 5w30 conventional motor oil niche?
- 8 brands and 117 sellers compete. The top 5 products take 51% of clicks and top 5 brands hold 96% of demand.
- What do buyers complain about in 5w30 conventional motor oil?
- Top complaints mined from reviews: Leak-Proof, Lubrication, Motor Issues. The return rate is 0.5%.
- What does it cost to enter the 5w30 conventional motor oil niche?
- Listings span $6.37–$78.81; the average listing price is $32.32 (sweet spot $15–$100). The average incumbent carries 4,967 reviews — the moat a new listing must climb.