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🚛 Power your fleet with the ultimate synthetic shield—because your engine deserves the best.
ULTRA 1PLUS SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil is a premium API CK-4/SN certified lubricant designed for modern diesel and gasoline heavy-duty engines. It delivers superior wear protection, exceptional shear stability, and thermal resilience, ensuring cleaner engines, reduced oil consumption, and extended service intervals. Compatible across mixed fleets, it safeguards emission systems while maintaining optimal viscosity under extreme conditions.





| ASIN | B0B5Y1XWYQ |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #100,516 in Automotive ( See Top 100 in Automotive ) #647 in Motor Oils |
| Brand Name | ULTRA 1PLUS |
| Compatible with Vehicle Type | Buses, Off-road / Industrial equipment, Truck, Vans |
| Container Type | Jug |
| Customer Reviews | 4.7 4.7 out of 5 stars (74) |
| Flash Point | 220 °C |
| Included Components | Motor Oil |
| Liquid Volume | 1 gallons |
| Manufacturer | Ultrachem LLC |
| Manufacturer Part Number | UFS1540CK4SNG |
| Manufacturer Warranty Description | 22 |
| Model Number | UL108 |
| Number of Packs | 1 |
| SAE J300 Viscosity Grade | 15W-40 |
| Size | 1 Gallon |
| UPC | 810050658966 |
| Unit Count | 128 Fluid Ounces |
| Viscosity Level | Medium to High |
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