---
product_id: 281393836
title: "Onan OnaMax SAE 15W-40 Engine Oil, 32 oz."
brand: "cummins"
price: "AR$135708"
currency: ARS
in_stock: true
reviews_count: 5
category: "Cummins"
url: https://www.desertcart.com.ar/products/281393836-onan-onamax-sae-15w-40-engine-oil-32-oz
store_origin: AR
region: Argentina
---

# High-temp oxidation resistance SAE 15W-40 Viscosity Grade 32 oz premium engine oil Onan OnaMax SAE 15W-40 Engine Oil, 32 oz.

**Brand:** cummins
**Price:** AR$135708
**Availability:** ✅ In Stock

## Summary

> 🔥 Keep your engine cool and your ride unstoppable!

## Quick Answers

- **What is this?** Onan OnaMax SAE 15W-40 Engine Oil, 32 oz. by cummins
- **How much does it cost?** AR$135708 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/281393836-onan-onamax-sae-15w-40-engine-oil-32-oz)

## Best For

- cummins enthusiasts

## Why This Product

- Trusted cummins brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smooth Operator:** Maintains optimal viscosity to reduce oil consumption and keep engines running clean
- • **Trusted by Pros:** Cummins-backed quality with 4.8-star rating from 1,000+ users
- • **Heat-Defying Formula:** Specially crafted to combat high temperature oil breakdown
- • **Engine Armor in a Bottle:** Factory-tested to reduce wear and extend engine life
- • **Universal Fit, Ultimate Performance:** Compatible with all Onan generators and most vehicles

## Overview

Onan OnaMax SAE 15W-40 Engine Oil is a premium conventional oil designed for maximum protection against engine wear and high-temperature oxidation. Factory-tested and trusted by Cummins, this 32 oz bottle delivers reliable viscosity and universal compatibility, making it the go-to choice for Onan generators and automotive engines alike.

## Description

Onan OnaMax SAE 15W-40 Engine Oil is factory tested to offer maximum protection. OnaMax Engine Oil is a conventional, non-synthetic oil specially formulated to reduce consumption and engine wear due to high temperature oil oxidation and viscosity increase. All Onan Generators from the factory are shipped with OnaMax 15W-40.

Review: The Right Oil for My Onan RV Generator – Won't Use Anything Else
Review: Oil

## Features

- manufacturer: Generic
- Item Trademark: GENERIC
- Item Weight: pounds, pounds, 1.00, 1.00
- Item Category: Auto Oil

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00278MET8 |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #78,828 in Automotive ( See Top 100 in Automotive ) #810 in Automotive Oils |
| Brand | Cummins |
| Brand Name | Cummins |
| Compatible with Vehicle Type | Car |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 1,005 Reviews |
| Global Trade Identification Number | 00690781000704 |
| Included Components | Oil |
| Item Type Name | Oil |
| Item Weight | 1.92 Pounds |
| Liquid Volume | 1 Liters |
| Liquid volume | 1 Liters |
| Manufacturer | Cummins |
| Manufacturer Part Number | 326-5336 |
| Model Number | 326-5336 |
| Package information | Bottle |
| SAE J300 Viscosity Grade | 15W-40 |
| Size | 32 oz |
| UPC | 690781000704 |
| Unit Count | 32 Fluid Ounces |
| Vehicle service type | Car |
| Viscosity Level | Medium to High |

## Product Details

- **Brand:** Cummins
- **Liquid volume:** 1 Liters
- **Package information:** Bottle
- **Vehicle service type:** Car
- **Viscosity:** 15w-40

## Images

![Onan OnaMax SAE 15W-40 Engine Oil, 32 oz. - Image 1](https://m.media-amazon.com/images/I/61ica2HVebL.jpg)

## Questions & Answers

**Q: Is this for gasoline engines?**
A: This is for Onan gas generators

**Q: Can i use this in a wood chipper with a 4 cycle engine?**
A: If your wood chipper requires 15w 40 weight oil this would most likely meet the motors requirements.

**Q: Why is the price 2x srp?**
A: Yes

**Q: It will work for 2022 Ram 2500 diesel?**
A: Yes.  It makes any diesel fuel become premium diesel.  The 2022 Cummins may not NEED it as much as an older high mileage diesel,  but will still get benefit from it

## Customer Reviews

### ⭐⭐⭐⭐⭐ The Right Oil for My Onan RV Generator – Won't Use Anything Else
*by J***N on 12 April 2026*



### ⭐⭐⭐⭐⭐ Oil
*by F***R on 5 April 2026*



### ⭐⭐⭐⭐⭐ Only use ONAN products on ONAN generators!
*by J***E on 5 September 2025*



## Frequently Bought Together

- CUMMINS NW Cummins 3265336 Onan SAE 15W-40 Oil - 1 Quart
- CUMMINS NW Cummins Onan 122-0836 Oil Filter (Packaging May Vary)
- CUMMINS NW Cummins 1403116 Onan Air Filter

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**Shop now:** [https://www.desertcart.com.ar/products/281393836-onan-onamax-sae-15w-40-engine-oil-32-oz](https://www.desertcart.com.ar/products/281393836-onan-onamax-sae-15w-40-engine-oil-32-oz)

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-08-27*