---
title: "onan generator oil — Niche Verdict: Skip it (26/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/onan-generator-oil"
last_updated: "2026-07-10T01:45:08.866Z"
locale: en
meta:
  description: "a concentrated shelf (top 5 take 100% of clicks) — onan generator oil doesn't clear our bar today."
  "og:description": "a concentrated shelf (top 5 take 100% of clicks) — onan generator oil doesn't clear our bar today."
  "og:title": "onan generator oil — Niche Verdict: Skip it (26/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **onan generator oil**

**Skip it****26/100 **

a concentrated shelf (top 5 take 100% of clicks) — onan generator oil doesn't clear our bar today.

**Market/yr**

**$41K**

**Growth (1y)**

**+39.1%**

**Products**

**4**

**Brands**

**2**

was 3 a year ago

**Sellers**

**33**

**Price range**

**$16.24–$53.83**

**Returns**

**0.5%**

**Rating**

**4.8★**

**Skip it**

Scored 26/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns

Market size

**2**

 ×0.30

Growth

**47**

 ×0.30

Competition

**0**

 ×0.20

Quality gap

**20**

 ×0.10

Returns

**96**

 ×0.10

## **Demand**

Weekly Amazon search volume, last 58 weeks — +39.1% year over year.

303151.5Spike '25Spike '26Jun '25Aug '25Oct '25Dec '25Feb '26Apr '26

## **Seasonality**

Monthly demand index across the year — 1.00 is average.

JFMAMJJASOND

Peak months: Jun, Jul, Aug · busiest ÷ quietest = 2.7×

## **Competition**

- Cummins93% - RV Wholesale Direct7%

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack. 2 brands and 33 sellers compete here.

**Brands**

**2 **▼falling

was 3 a year ago

**Sellers**

**33**

**Top 5 brand share**

**100%**

#ProductBrandPriceRatingReviewsClick shareTrend

1
![Onan OnaMax SAE 15W-40 Engine Oil 32 oz.](https://m.media-amazon.com/images/I/41gVeS3zz+L.jpg) [**Onan OnaMax SAE 15W-40 Engine Oil 32 oz.**](https://www.amazon.com/dp/B00278MET8)

Cummins$16.244.8★1,05866%▲rising

2
![Cummins 3265336 Onan SAE 15W-40 Oil - 1 Quart (Quantity 3)](https://m.media-amazon.com/images/I/41ti3B-CRPL.jpg) [**Cummins 3265336 Onan SAE 15W-40 Oil - 1 Quart (Quantity 3)**](https://www.amazon.com/dp/B00YBFXRGY)

Cummins$45.144.9★21223%▼falling

3
![OnaMax SAE10W-30 - (A063E183) (2)](https://m.media-amazon.com/images/I/41o70rOp3nL.jpg) [**OnaMax SAE10W-30 - (A063E183) (2)**](https://www.amazon.com/dp/B08Q9SC9CR)

RV Wholesale Direct$53.834.8★187%▲rising

4
![Cummins 3265336 Onan SAE 15W-40 Oil - 1 Quart Quantity 2](https://m.media-amazon.com/images/I/41kX8IgUF-L.jpg) [**Cummins 3265336 Onan SAE 15W-40 Oil - 1 Quart Quantity 2**](https://www.amazon.com/dp/B00YBFXQEW)

Cummins$28.634.8★3094%▼falling

## **Product shelf**

All 4 tracked products in this niche.

Top sellersNewestTrending

[![Onan OnaMax SAE 15W-40 Engine Oil 32 oz.](https://m.media-amazon.com/images/I/41gVeS3zz+L.jpg)**Onan OnaMax SAE 15W-40 Engine Oil 32 oz.** Cummins**$16.24**4.8★1,058 reviews](https://www.amazon.com/dp/B00278MET8) [![Cummins 3265336 Onan SAE 15W-40 Oil - 1 Quart (Quantity 3)](https://m.media-amazon.com/images/I/41ti3B-CRPL.jpg)**Cummins 3265336 Onan SAE 15W-40 Oil - 1 Quart (Quantity 3)** Cummins**$45.14**4.9★212 reviews](https://www.amazon.com/dp/B00YBFXRGY) [![OnaMax SAE10W-30 - (A063E183) (2)](https://m.media-amazon.com/images/I/41o70rOp3nL.jpg)**OnaMax SAE10W-30 - (A063E183) (2)** RV Wholesale Direct**$53.83**4.8★18 reviews](https://www.amazon.com/dp/B08Q9SC9CR) [![Cummins 3265336 Onan SAE 15W-40 Oil - 1 Quart Quantity 2](https://m.media-amazon.com/images/I/41kX8IgUF-L.jpg)**Cummins 3265336 Onan SAE 15W-40 Oil - 1 Quart Quantity 2** Cummins**$28.63**4.8★309 reviews](https://www.amazon.com/dp/B00YBFXQEW)

## **Reviews**

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

### **What buyers love **

**Quality-Overall**31%

*“Top quality”*

**Value For Money**25%

*“Great price”*

**Correct Contents**13%

*“Perfect quantity”*

**Lubrication**13%

*“Using the manufacturer-recommended oil just makes sense”*

**Motor Power**13%

*“High-quality makes my generator run really good”*

**Advertised Vs Actual Product**6%

*“Exactly what I needed”*

### **What buyers complain about **

#### **Top return reasons**- Leak-Proof46% - Assembly/Installation15% - Lubrication15% - Maintenance And Repair8% - Advertised Vs Actual Product8% - Value For Money8%