![Amazon.com: Duragard Diamond Plate Synthetic Blend CK4 15w40 Engine Oil - 2.5 Gallon Jug - Meets Ford WSS-M2C171-F1 : Automotive Amazon.com: Duragard Diamond Plate Synthetic Blend CK4 15w40 Engine Oil - 2.5 Gallon Jug - Meets Ford WSS-M2C171-F1 : Automotive](https://m.media-amazon.com/images/I/71sNUVv7f+L.jpg)
Amazon.com: Duragard Diamond Plate Synthetic Blend CK4 15w40 Engine Oil - 2.5 Gallon Jug - Meets Ford WSS-M2C171-F1 : Automotive
![Lucas Oil Products 15W-40 Magnum CK-4 Conventional Heavy Duty Diesel Engine Oil, 1 Gallon - Walmart.com Lucas Oil Products 15W-40 Magnum CK-4 Conventional Heavy Duty Diesel Engine Oil, 1 Gallon - Walmart.com](https://i5.walmartimages.com/asr/a246d22c-d05a-4621-978c-c8fcbecd9aeb_1.2d1ef5be61eab2ab06f110d8d365277f.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)
Lucas Oil Products 15W-40 Magnum CK-4 Conventional Heavy Duty Diesel Engine Oil, 1 Gallon - Walmart.com
![Amazon.com: Duragard Diamond Plate Synthetic Blend CK4 15w40 Engine Oil - 5 Gallon Pail - Meets WSS-M2C171-F1 : Automotive Amazon.com: Duragard Diamond Plate Synthetic Blend CK4 15w40 Engine Oil - 5 Gallon Pail - Meets WSS-M2C171-F1 : Automotive](https://m.media-amazon.com/images/I/71ynhqoAFOL.jpg)
Amazon.com: Duragard Diamond Plate Synthetic Blend CK4 15w40 Engine Oil - 5 Gallon Pail - Meets WSS-M2C171-F1 : Automotive
![Amazon.com: Duragard Synthetic Blend CK4 15w40-1 Gallon (Pack of 3) Meets WSS-M2C171-F1 : Automotive Amazon.com: Duragard Synthetic Blend CK4 15w40-1 Gallon (Pack of 3) Meets WSS-M2C171-F1 : Automotive](https://m.media-amazon.com/images/I/91E5yk1cAYL.jpg)
Amazon.com: Duragard Synthetic Blend CK4 15w40-1 Gallon (Pack of 3) Meets WSS-M2C171-F1 : Automotive
![Shell Rotella T4 Triple Protection 15W-40 (CK-4) Heavy-Duty Diesel Engine Oil - 5 Gallon Pail at SkyGeek.com Shell Rotella T4 Triple Protection 15W-40 (CK-4) Heavy-Duty Diesel Engine Oil - 5 Gallon Pail at SkyGeek.com](https://cdn11.bigcommerce.com/s-jifykode7m/images/stencil/1280x1280/products/12033/130136/SGP51319_2_main__66991.1623412299.jpg?c=1)
Shell Rotella T4 Triple Protection 15W-40 (CK-4) Heavy-Duty Diesel Engine Oil - 5 Gallon Pail at SkyGeek.com
![222290428, Delo 15W40 CK4 - 5 Gallon, Heavy Duty Oil - Heavy Duty Truck, Tractor Trailer Parts, Class 8 and Diesel Engine Parts & Supplies - Order Online - Real Time Inventory 222290428, Delo 15W40 CK4 - 5 Gallon, Heavy Duty Oil - Heavy Duty Truck, Tractor Trailer Parts, Class 8 and Diesel Engine Parts & Supplies - Order Online - Real Time Inventory](https://www.pscpartsstore.com/content/images/thumbs/0037262_22229-delo-15w40-ck4-5-gallon-heavy-duty-oil.jpeg)