

🛠️ Keep your generator running like a pro with OnaMax precision oil!
Onan OnaMax SAE 15W-40 Engine Oil is a premium, conventional motor oil designed specifically for Onan generators. It offers superior protection against high-temperature oxidation and viscosity changes, reducing engine wear and oil consumption. Factory-tested and recommended by Cummins, this 32 oz bottle ensures your generator performs reliably under demanding conditions.
| ASIN | B00278MET8 |
| Best Sellers Rank | #70,720 in Automotive ( See Top 100 in Automotive ) #775 in Automotive Oils |
| Brand Name | Cummins |
| Compatible with Vehicle Type | Car |
| Container Type | Bottle |
| Customer Reviews | 4.8 4.8 out of 5 stars (994) |
| Global Trade Identification Number | 00690781000704 |
| Item Weight | 1.92 Pounds |
| Liquid Volume | 1 Liters |
| Manufacturer | Cummins |
| Manufacturer Part Number | 326-5336 |
| UPC | 690781000704 |
| Unit Count | 32 Fluid Ounces |
| Viscosity | 15w-40 |
J**E
One thing I've learned after buying an RV is that the ONAN generators are very particular. I only use ONAN product/parts. This oil is a little pricey but is excellent quality and what ONAN recommends.
D**N
Perfect for my RV generator. I don't know why but you can't purchase this product at a automotive store. Only Amazon or Cummins.
T**M
Im a stickler for using original equipment or recommend parts
R**S
Recommend by Onan for first 20 hr oil change on our 5500 generator.
D**S
Onan calls for this oil but price I paid is obscene. We were leaving on a trip and through my own fault I was unable to buy this less expensive with lead times. Came very close to putting Valvoline in but then would have had to change again once Onan oil arrived. Again, the price is 100% where my dissatisfied lies. Product is good!
Trustpilot
2 weeks ago
2 months ago