---
product_id: 697022024
title: "SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil | API CK-4/SN | 55 Gallon Drum"
brand: "ultra 1plus"
price: "€ 5760.44"
currency: EUR
in_stock: true
reviews_count: 8
category: "Ultra 1 Plus"
url: https://www.desertcart.hr/products/697022024-sae-15w-40-full-synthetic-heavy-duty-diesel-engine-oil
store_origin: HR
region: Croatia
---

# Superior Thermal & Oxidation Stability 15W-40 Full Synthetic Viscosity API CK-4/SN Certified Protection SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil | API CK-4/SN | 55 Gallon Drum

**Brand:** ultra 1plus
**Price:** € 5760.44
**Availability:** ✅ In Stock

## Summary

> 🛢️ Power your fleet with the ultimate synthetic edge — don’t get left idling behind!

## Quick Answers

- **What is this?** SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil | API CK-4/SN | 55 Gallon Drum by ultra 1plus
- **How much does it cost?** € 5760.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/697022024-sae-15w-40-full-synthetic-heavy-duty-diesel-engine-oil)

## 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

- • **Extended Drain Intervals:** Synthetic base oils resist breakdown under extreme heat and load, reducing maintenance frequency.
- • **Fleet-Ready Bulk Packaging:** 55-gallon drum designed for service centers and distributors, made in the USA for trusted quality.
- • **Certified for Modern Engines:** Exceeds API CK-4 and SN standards, compatible with EGR, DPF, and SCR aftertreatment systems.
- • **Next-Level Engine Protection:** Guards against wear, corrosion, soot buildup, and viscosity loss for longer engine life.
- • **Engineered for Heavy-Duty Performance:** Full synthetic 15W-40 formula optimized for trucks, fleets, and commercial diesel engines.

## Overview

ULTRA 1PLUS SAE 15W-40 is a full synthetic heavy-duty diesel engine oil designed for on-highway trucks and commercial vehicles. It meets and exceeds API CK-4/SN standards, offering superior thermal stability and engine protection while supporting modern low-emission systems. Packaged in a 55-gallon drum, it’s ideal for fleets and service centers seeking extended drain intervals and reliable performance.

## Description

Product description

Review: I like the packaging - Excellent product
Review: Runs cool, well kinda, in Kubota BX2230 - After 20 years I decided to convert my Kubota BX2230 to synthetic oil since everything I've read indicates synthetic is superior in every way. I wish I could say that the tractor now purrs like a kitten at idol but that would not be honest. it still rattles and shakes like a 1960's rock and roll gogo girl. But, that's okay. As long as it keeps running I will be happy.

## 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 | B0DG3LYL7S |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #161,778 in Automotive ( See Top 100 in Automotive ) #885 in Motor Oils |
| Brand | ULTRA 1PLUS |
| Brand Name | ULTRA 1PLUS |
| Compatible with Vehicle Type | Buses, Off-road / Industrial equipment, Truck, Vans |
| Container Type | Drum |
| Customer Reviews | 4.6 out of 5 stars 66 Reviews |
| Included Components | oil |
| Liquid Volume | 55 Gallons |
| Manufacturer | Ultra1plus |
| Manufacturer Part Number | UFS1540CK4D |
| Manufacturer Warranty Description | 22 |
| Model Number | UFS1540CK4 |
| Package Information | Drum |
| SAE J300 Viscosity Grade | 15W-40 |
| Size | 55 Gallon Drum |
| UPC | 850041600635 |
| Unit Count | 256.0 Fluid Ounces |
| Vehicle Service Type | Buses, Off-road / Industrial equipment, Truck, Vans |
| Viscosity Level | Medium to High |

## Product Details

- **Brand:** ULTRA 1PLUS
- **Liquid Volume:** 55 Gallons
- **Package Information:** Drum
- **Vehicle Service Type:** Truck
- **Viscosity:** 15W 40 SAE Grade

## Images

![SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil | API CK-4/SN | 55 Gallon Drum - Image 1](https://m.media-amazon.com/images/I/51iXMx8jzuL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I like the packaging
*by M***S on September 22, 2025*

Excellent product

### ⭐⭐⭐⭐⭐ Runs cool, well kinda, in Kubota BX2230
*by J***S on June 13, 2024*

After 20 years I decided to convert my Kubota BX2230 to synthetic oil since everything I've read indicates synthetic is superior in every way. I wish I could say that the tractor now purrs like a kitten at idol but that would not be honest. it still rattles and shakes like a 1960's rock and roll gogo girl. But, that's okay. As long as it keeps running I will be happy.

### ⭐⭐⭐⭐⭐ Great price, beats all retailers
*by W***T on April 21, 2024*

Great price on great synthetic.

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**Shop now:** [https://www.desertcart.hr/products/697022024-sae-15w-40-full-synthetic-heavy-duty-diesel-engine-oil](https://www.desertcart.hr/products/697022024-sae-15w-40-full-synthetic-heavy-duty-diesel-engine-oil)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-06-09*