--- product_id: 578104943 title: "SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 2 Gallons" brand: "ultra 1plus" price: "$418.49" currency: USD in_stock: true category: "Ultra 1 Plus" url: https://www.desertcart.us/products/578104943-sae-15w-40-full-synthetic-diesel-engine-oil-api-ck store_origin: US region: United States of America --- # 2 gallons - long-lasting heavy-duty supply 428°F flash point - extreme heat resilience API CK-4/SN certified - top-tier engine protection SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 2 Gallons **Brand:** ultra 1plus **Price:** $418.49 **Availability:** ✅ In Stock ## Summary > ⚡ Power your fleet with the ultimate synthetic shield! ## Quick Answers - **What is this?** SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 2 Gallons by ultra 1plus - **How much does it cost?** $418.49 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/578104943-sae-15w-40-full-synthetic-diesel-engine-oil-api-ck) ## Best For - ultra 1plus enthusiasts ## Why This Product - Trusted ultra 1plus brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Emission System Friendly:** Protects DPF, EGR, and after-treatment systems to keep your fleet compliant and green. - • **Extended Service Intervals:** Reduces oil consumption and shear loss, saving you time and maintenance costs. - • **Unmatched Thermal Stability:** Keeps your engine cool and protected even under the harshest heat and heavy loads. - • **Versatile Fleet Compatibility:** One oil solution for diesel and gasoline heavy-duty engines across your entire fleet. - • **Advanced Full Synthetic Formula:** Fights wear, soot, and oxidation to extend engine life and performance. ## Overview ULTRA 1PLUS SAE 15W-40 Full Synthetic Diesel Engine Oil is a premium API CK-4/SN certified lubricant designed for 2020+ on-highway trucks and Tier 4 non-road diesel engines. It delivers superior wear protection, exceptional shear stability, and thermal resilience with a high 428°F flash point. This 2-gallon jug supports emission system compatibility and reduces oil consumption, making it the go-to choice for heavy-duty fleets seeking reliability, compliance, and extended engine life. ## Description Buy SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 2 Gallons | Delivers superior wear protection and thermal stability for heavy-duty diesel engines in extreme temperatures and heavy loads: Motor Oils - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - API CK-4 / SN CERTIFIED 15W-40 FULL SYNTHETIC DIESEL OIL: U1P 15W40 diesel oil xceeds API CK-4, CJ-4, CI-4 PLUS, CH-4 and SN. Specifically engineered for 2020+ on-highway trucks and Tier 4 non-road diesel engines - SUPERIOR HEAVY-DUTY ENGINE PROTECTION: Advanced full synthetic formula protects against wear, piston deposits, soot thickening, oxidation, shear loss, and aeration — keeping your engine cleaner and running longer - EXCEPTIONAL SHEAR STABILITY & HIGH-TEMPERATURE PERFORMANCE: Maintains precise 15W-40 viscosity under extreme stress, heat, and heavy loads. Prevents breakdown and delivers reliable protection for long-haul trucks, construction, and agriculture equipment - REDUCED OIL CONSUMPTION & EMISSIONS SYSTEM COMPATIBILITY: Minimizes oil burn-off while protecting DPF, EGR, and after-treatment systems. Helps extend service intervals and maintain emission compliance - VERSATILE DIESEL & MIXED FLEET COMPATIBILITY: Backward compatible with all previous four-stroke diesel engines. Also suitable for gasoline heavy-duty applications requiring API SN. One oil for your entire fleet ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B5VK8L7X | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | #125,635 in Automotive ( See Top 100 in Automotive ) #744 in Motor Oils | | Brand | ULTRA 1PLUS | | Brand Name | ULTRA 1PLUS | | Compatible with Vehicle Type | Buses, Off-road / Industrial equipment, Truck, Vans | | Container Type | Jug | | Customer Reviews | 4.7 out of 5 stars 74 Reviews | | Flash Point | 428 °F | | Included Components | Motor Oil | | Item Highlight | Delivers superior wear protection and thermal stability for heavy-duty diesel engines in extreme temperatures and heavy loads | | Liquid Volume | 2 gallons | | Manufacturer | Ultrachem LLC | | Manufacturer Part Number | UFS1540CK4SN-2G | | Manufacturer Warranty Description | 22 | | Model Number | UFS1540CK4-2G | | Number of Packs | 1 | | Package Information | Jug | | SAE J300 Viscosity Grade | 15W-40 | | Size | 2 Gallon Pack | | UPC | 810050658997 | | Unit Count | 256 Fluid Ounces | | Vehicle Service Type | Buses, Off-road / Industrial equipment, Truck, Vans | ## Product Details - **Brand:** ULTRA 1PLUS - **Liquid Volume:** 1 gallons - **Package Information:** Jug - **SAE J300 Viscosity Grade:** 15W-40 - **Vehicle Service Type:** Buses, Off-road / Industrial equipment, Truck, Vans ## Images ![SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 2 Gallons - Image 1](https://m.media-amazon.com/images/I/816DBXVT7WL.jpg) ![SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 2 Gallons - Image 2](https://m.media-amazon.com/images/I/81HWujrYsnL.jpg) ![SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 2 Gallons - Image 3](https://m.media-amazon.com/images/I/81Us0qA-z9L.jpg) ![SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 2 Gallons - Image 4](https://m.media-amazon.com/images/I/71FY2+FJzmL.jpg) ![SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 2 Gallons - Image 5](https://m.media-amazon.com/images/I/71NPTeipZVL.jpg) ## Available Options This product comes in different **Size** options. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/578104943-sae-15w-40-full-synthetic-diesel-engine-oil-api-ck](https://www.desertcart.us/products/578104943-sae-15w-40-full-synthetic-diesel-engine-oil-api-ck) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-13*