Cummins / Onan 326-5336, OnaMax SAE 15W-40, 32 Ounce Bottle, Single-NEW-SHIP 24H. Condition is Brand New.(Bottle Has Some Shelf Wear From Warehouse But Product Is New And Unused). Brand: Cummins / Onan Model: 326-5336 Shipped with USPS Priority Mail . You Will Receive 1 ea Cummins / Onan 326-5336, OnaMax SAE 15W-40, 32 Ounce Bottle, Single-NEW-SHIP 24H. RARE VINTAGE COLLECTIBLE SHIPS N 24 HOURS Packed By Our Award Winning Packaging And Shipping Department Long Time E-commerce Seller For Over 20 Years LIMITED AVAILABILITY Follow Our Store For All New Rare Products Posted Daily and Specials Please click https://www.ebay.com/usr/boughtnowcommerce Inventory Box Number: Lower Level RV Room Cummins Onan 326-5336 SAE 15W - 40 Onan OnaMax Generator Oil is the factory recommended choice for your RV generator. Tested to ensure maximum protection to your generator's engine, this oil is formulated to reduce consumption and engine wear due to high temperature, oil oxidation and viscosity increase. 1 Quart Bottle. Green Label Parts oil filters feature valves that allow oil to bypass the oil filter during cold starts, or if the filter becomes plugged. Other manufacturers? oil filters often do not have bypass valves. As these ?will-fit? filters trap debris, oil pressure starvation can occur, leading to high oil pressures, failed gaskets and even engine damage. Other ?will-fit? oil filters do contain bypass valves but they do not be determine at what PSI the valve opens. If the setting is too high, the filter?s paper element can be damaged during a cold start rendering it useless, or cause oil starvation to the engine.