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75w90 synthetic gear oil

Skip it51/100

strong incumbent ratings (4.8★) — 75w90 synthetic gear oil doesn't clear our bar today.

Market/yr

$956K

Growth (1y)

+192.8%

Products

16

Brands

7

was 9 a year ago

Sellers

204

Price range

$12.15–$71.23

Returns

1.7%

Rating

4.8★

51/100

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Scored 51/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns
Market size
33
×0.30
Growth
76
×0.30
Competition
39
×0.20
Quality gap
20
×0.10
Returns
86
×0.10

Demand

Weekly Amazon search volume, last 104 weeks — +192.8% year over year.
10K5KSpike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26

Seasonality

Monthly demand index across the year — 1.00 is average.

No pronounced peak months · busiest ÷ quietest = 1.4×

Competition

62%Valvoline
  • Valvoline62%
  • Lucas Oil11%
  • Amsoil11%
  • Triax4%
  • Mobil4%
  • Royal Purple4%
  • Other (1 brands)4%

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them. 7 brands and 204 sellers compete here.

Brands

7 falling

was 9 a year ago

Sellers

204

Top 5 brand share

92%

#ProductBrandPriceRatingReviewsClick shareTrend
5Lucas Oil$16.194.8★1,7246%falling
6Valvoline$12.154.8★1,2565%rising
7Lucas Oil$51.694.9★1,4245%rising
9Speedway Motors$69.174.8★6084%falling
12Valvoline$14.874.8★4,3593%falling

Product shelf

All 16 tracked products in this niche.

Reviews

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

What buyers love

Quality-Overall28%

“This gear oil seems like very good quality”

Value For Money17%

“Not cheap”

Lubrication14%

“Good oil”

Ease Of Use11%

“Easy to Use”

Advertised Vs Actual Product7%

“worked as advertised”

Efficiency3%

“Works well”

Soft Feel2%

“Shifts feel smoother”

Noise Level1%

“Works great and the differential is extremely quiet”

Locally Manufactured1%

“Perfect choice for my Colorado”

Maintenance And Repair1%

“Good for older car maintenance”

What buyers complain about

Lubrication13%

“Did not have a lift so did the Ol crawl under”

Smell13%

“Smelly”

Leak-Proof10%

“Arrived leaking”

Value For Money8%

“Ended up costing me more than it was worth”

Ease Of Use5%

“Containers are a little tricky to use if you have to use an extension hose”

Storage Capacity4%

“Not much space wothout lifting thr car”

Advertised Vs Actual Product4%

“as advertised - it is gl5 although the picture doesn't show it anymore”

Noise Level4%

“Had a car with a loud rear end”

Quality-Overall4%

“Garbage”

Thickness2%

“I would say the viscosity is slightly thinner than the Valvoline synthetic equivalent”

Top return reasons

  • Leak-Proof25%
  • Compatibility-Overall24%
  • Lubrication13%
  • Value For Money10%
  • Advertised Vs Actual Product6%
  • Functionality-Overall4%
  • Defective Material/Parts3%
  • Certifications2%
  • Size-Overall2%
  • Product Condition2%

Data scraped July 9, 2026 · Marketplace baseline: 4.4★ avg rating · $22.66 median price · 2.2% median returns across 14,418 tracked niches.