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10w30 motor oil

Worth a look55/100

10w30 motor oil shows low returns (0.5%), but strong incumbent ratings (4.8★) keeps it on the watch list.

Market/yr

$1.5M

Growth (1y)

+155.6%

Products

22

Brands

7

was 9 a year ago

Sellers

78

Price range

$5.37–$69.13

Returns

0.5%

Rating

4.8★

55/100

Worth a look

Scored 55/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
41
×0.30
Growth
72
×0.30
Competition
50
×0.20
Quality gap
20
×0.10
Returns
96
×0.10

Demand

Weekly Amazon search volume, last 103 weeks — +155.6% year over year.
25K12KSpike '24Spike '25Prime Day '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26

Seasonality

Monthly demand index across the year — 1.00 is average.

Peak months: Apr, May · busiest ÷ quietest = 2.3×

Competition

27%Valvoline
  • Valvoline27%
  • Castrol23%
  • Pennzoil17%
  • Mobil16%
  • STP13%
  • HAVOLINE3%
  • Other (1 brands)1%

The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them. 7 brands and 78 sellers compete here.

Brands

7 falling

was 9 a year ago

Sellers

78

Top 5 brand share

96%

#ProductBrandPriceRatingReviewsClick shareTrend
5Castrol$20.814.8★4,4177%falling
6Pennzoil$6.394.8★4,3137%falling
9Pennzoil$22.364.8★4,3134%rising
10Pennzoil$19.424.8★8,7173%rising
13HAVOLINE$5.494.7★1,0952%rising
15Valvoline$9.234.9★2,5141%flat

Product shelf

All 22 tracked products in this niche.

Reviews

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

What buyers love

Value For Money28%

“Excellent value”

Quality-Overall20%

“Excellent product”

Lubrication18%

“Good Lubrication”

Advertised Vs Actual Product11%

“As advertised”

Motor Power4%

“Excellent motor oil”

Efficiency4%

“Very effective and to me is the best brand”

Fuel Efficiency3%

“Fuel efficiency”

Ease Of Use2%

“Easy to use”

Leak-Proof2%

“doesnt cause leaks”

Correct Contents1%

“Correct 👍 product”

What buyers complain about

Leak-Proof24%

“Bottle leaked”

Value For Money10%

“a little expensive”

Weight Heavy6%

“1=too heavy to move around”

Ease Of Use6%

“don't buy for everyday use”

Size-Overall6%

“Small engine oil”

Ease Of Cleaning4%

“It is hard to pour out the box without making a little of a mess”

Lubrication4%

“The majority of jeep 4.0L owners think modern oil is bad”

Thickness4%

“Does not look like Mobil1 not much thicker than water”

Filtration2%

“It was the heaviest oil filter I have ever changed on my truck”

Heating2%

“Before, it would stop as soon as it started, which was very troublesome, especially when it was cold”

Top return reasons

  • Leak-Proof23%
  • Compatibility-Overall20%
  • Lubrication18%
  • Value For Money11%
  • Advertised Vs Actual Product8%
  • Certifications4%
  • Defective Material/Parts3%
  • Motor Issues3%
  • Size-Overall2%
  • Fuel Efficiency2%

Data scraped July 9, 2026 · Marketplace baseline: 4.4★ avg rating · $22.71 median price · 2.2% median returns across 13,812 tracked niches.