---
product_id: 504059816
title: "SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil - 15W 40 Motor Oil API CK-4/SN (1 Gallon)"
brand: "ultra 1plus"
price: "877 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Ultra 1 Plus"
url: https://www.desertcart.dk/products/504059816-sae-15w-40-full-synthetic-heavy-duty-diesel-engine-oil
store_origin: DK
region: Denmark
---

# Reduced oil consumption - efficiency boost 220°C flash point - thermal resilience API CK-4/SN certified - industry-leading standard SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil - 15W 40 Motor Oil API CK-4/SN (1 Gallon)

**Brand:** ultra 1plus
**Price:** 877 kr
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your diesel with Ultra 1Plus – where durability meets efficiency!

## Quick Answers

- **What is this?** SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil - 15W 40 Motor Oil API CK-4/SN (1 Gallon) by ultra 1plus
- **How much does it cost?** 877 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/504059816-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

- • **Stay-in-Grade Viscosity:** Maintains optimal thickness to ensure smooth engine operation and longevity.
- • **Emission System Friendly:** Designed to preserve advanced after-treatment systems, keeping your ride eco-compliant.
- • **Cost-Efficient Performance:** Reduces oil consumption, cutting down on maintenance frequency and expenses.
- • **Unmatched Thermal Stability:** Withstands extreme heat up to 220°C, protecting your engine under pressure.
- • **Next-Level Engine Protection:** Full synthetic formula guards against wear, deposits, and soot buildup for peak performance.

## Overview

Ultra 1Plus SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil delivers superior protection and performance for modern diesel engines. Engineered to exceed API CK-4/SN standards, it offers exceptional thermal stability, reduces oil consumption, and supports emission control systems, making it the smart choice for professionals demanding reliability and efficiency.

## Description

Buy Ultra 1Plus SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil - 15W 40 Motor Oil API CK-4/SN (1 Gallon): Motor Oils - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: I like the packaging - Excellent product
Review: Great price, beats all retailers - Great price on great synthetic.

## Features

- Advanced Protection: Ultra1Plus SAE 15W-40 Full Synthetic Heavy-Duty Motor Oil provides enhanced protection against oil oxidation, viscosity loss due to shear, and oil aeration, as well as protection against catalyst poisoning, particulate filter blocking, engine wear, piston deposits, degradation of low- and high-temperature properties, and soot-related viscosity increase.
- Superior Performance: This motor oil is formulated with synthetic base oils and a premium additive package to exceed the performance criteria of API CK-4, CJ-4, CI-4 with CI-4 PLUS, CI-4, and CH-4. It can effectively lubricate engines calling for those API Service Categories.
- Stay-in-Grade Performance: The strong shear stability of Ultra1Plus SAE 15W-40 Full Synthetic Heavy-Duty Motor Oil provides stay-in-grade performance, ensuring the oil maintains its viscosity and protects the engine against thermal breakdown at high temperatures.
- Reduced Oil Consumption: Full synthetic motor oil minimizes oil consumption in all types of driving conditions, helping to reduce the need for frequent oil top-ups and changes.
- Versatile Use: This oil is designed for use in high-speed four-stroke cycle diesel engines designed to meet 2020 model year on-highway and Tier 4 non-road exhaust emission standards as well as for previous model year diesel engines. It is especially effective at sustaining emission control system durability where particulate filters and other advanced after-treatment systems are used.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B5Y1XWYQ |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #84,495 in Automotive ( See Top 100 in Automotive ) #579 in Motor Oils |
| Brand | ULTRA 1PLUS |
| Customer Reviews | 4.6 4.6 out of 5 stars (64) |
| Date First Available | April 15, 2022 |
| Flash Point | 220 Degrees Celsius |
| Item Weight | 7.39 pounds |
| Item model number | UL108 |
| Manufacturer | Ultrachem LLC |
| Manufacturer Part Number | UFS1540CK4SNG |
| Model | SAE 15W-40 Full Synthetic Heavy-Duty Motor Oil, API CK-4/SN |
| Product Dimensions | 4 x 8.25 x 11 inches |
| SAE J300 Viscosity Grade | 15W-40 |
| Size | 1 Gal (Most Popular) |
| Special Features | diesel |
| UPC | 810050658966 |
| Vehicle Service Type | Truck |
| Viscosity | 15W 40 SAE Grade |

## Product Details

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

## Images

![SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil - 15W 40 Motor Oil API CK-4/SN (1 Gallon) - Image 1](https://m.media-amazon.com/images/I/81REEzr7aDL.jpg)

## Customer Reviews

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

Excellent product

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

Great price on great synthetic.

### ⭐⭐⭐⭐⭐ Great oil. Great price
*by B***K on December 20, 2023*

I like that it’s a great oil and made in America

## Frequently Bought Together

- Ultra 1Plus SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil - 15W 40 Motor Oil API CK-4/SN (1 Gallon)
- ACDelco GM Original Equipment PF2232 Engine Oil Filter
- Triax Fleet Supreme 15W-40 API CK-4 Full Synthetic Diesel Engine Oil | Friction Optimized and Boosted with Molybdenum & Nano-Boron | Superb Powerstroke Performance (5 Gallon)

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**Shop now:** [https://www.desertcart.dk/products/504059816-sae-15w-40-full-synthetic-heavy-duty-diesel-engine-oil](https://www.desertcart.dk/products/504059816-sae-15w-40-full-synthetic-heavy-duty-diesel-engine-oil)

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-29*