---
product_id: 251936193
title: "SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 5 Gallon Pail | Delivers superior wear protection and thermal stability for heavy-duty diesel engines in extreme temperatures and heavy loads"
brand: "ultra 1plus"
price: "70876 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Ultra 1 Plus"
url: https://www.desertcart.is/products/251936193-sae-15w-40-full-synthetic-diesel-engine-oil-api-ck
store_origin: IS
region: Iceland
---

# 220°C Flash Point Thermal Stability API CK-4/SN Certified Heavy-Duty Protection 5 Gallons Full Synthetic Power SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 5 Gallon Pail | Delivers superior wear protection and thermal stability for heavy-duty diesel engines in extreme temperatures and heavy loads

**Brand:** ultra 1plus
**Price:** 70876 kr
**Availability:** ✅ In Stock

## Summary

> 🛠️ Power Your Fleet with Confidence — Synthetic Strength That Won't Quit!

## Quick Answers

- **What is this?** SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 5 Gallon Pail | Delivers superior wear protection and thermal stability for heavy-duty diesel engines in extreme temperatures and heavy loads by ultra 1plus
- **How much does it cost?** 70876 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/251936193-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

- • **One Oil to Rule Your Fleet:** Backward compatible with all previous diesel engines and suitable for gasoline heavy-duty vehicles—simplify your maintenance routine.
- • **Consistent Viscosity Under Fire:** Maintains precise 15W-40 thickness even in extreme heat and heavy loads, preventing oil breakdown and engine stress.
- • **Unmatched Wear & Deposit Defense:** Advanced synthetic formula fights wear, soot, and piston deposits to keep your engine cleaner and running longer.
- • **Eco-Friendly & Emission System Safe:** Minimizes oil consumption while protecting DPF, EGR, and after-treatment systems to keep your fleet compliant and green.
- • **Engineered for Modern Diesel Powerhouses:** Specifically designed for 2020+ trucks & Tier 4 non-road diesel engines, ensuring peak performance under pressure.

## Overview

ULTRA 1PLUS SAE 15W-40 Full Synthetic Diesel Engine Oil delivers superior heavy-duty engine protection with API CK-4/SN certification. Its advanced formula ensures exceptional shear stability, thermal resistance up to 220°C, and compatibility with modern diesel and gasoline engines. Packaged in a convenient 5-gallon pail, it reduces oil consumption and safeguards emission systems, making it the ultimate choice for professional fleets and heavy machinery.

## Description

Buy SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 5 Gallon Pail | 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

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.
Review: Works great for my tractors in my truck - It's compatible with all my tractors and trucks. The value for the money is good. It's synthetic, it's durable. It stays pretty clean in my engine for a while, especially on my tractors. I've not had any leakage or sealing issues

## 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 | B08M9Q4QQY |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #83,492 in Automotive ( See Top 100 in Automotive ) #582 in Motor Oils |
| Brand | ULTRA 1PLUS |
| Brand Name | ULTRA 1PLUS |
| Compatible with Vehicle Type | Buses, Off-road / Industrial equipment, Truck, Vans |
| Container Type | Pail |
| Customer Reviews | 4.7 out of 5 stars 74 Reviews |
| Flash Point | 220 °C |
| Included Components | oil |
| Item Type Name | Motor oil |
| Item Weight | 38 pounds |
| Liquid Volume | 5 gallons |
| Manufacturer | Ultrachem LLC |
| Manufacturer Part Number | UFS1540CK4SNP |
| Manufacturer Warranty Description | 22 |
| Model Number | UFS1540CK4SNP |
| Package Information | Pail |
| SAE J300 Viscosity Grade | 15W-40 |
| Size | 5 Gallon Pail |
| UPC | 810050657570 |
| Unit Count | 640 Fluid Ounces |
| Vehicle Service Type | Buses, Off-road / Industrial equipment, Truck, Vans |

## Product Details

- **Brand:** ULTRA 1PLUS
- **Liquid Volume:** 5 Gallons
- **Package Information:** Pail
- **Vehicle Service Type:** Truck
- **Viscosity:** 15W 40 SAE Grade

## Images

![SAE 15W-40 Full Synthetic Diesel Engine Oil API CK-4/SN 5 Gallon Pail | Delivers superior wear protection and thermal stability for heavy-duty diesel engines in extreme temperatures and heavy loads - Image 1](https://m.media-amazon.com/images/I/71DOdVHVQDL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Works great for my tractors in my truck
*by D***G on July 22, 2026*

It's compatible with all my tractors and trucks. The value for the money is good. It's synthetic, it's durable. It stays pretty clean in my engine for a while, especially on my tractors. I've not had any leakage or sealing issues

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

Excellent product

## Frequently Bought Together

- Ultra 1Plus SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil - 15W 40 Motor Oil API CK-4/SN (5 Gallon Pail)
- Motorkote MK-HL01G-04 Heavy Duty Hyper Lubricant, 1-Gallon, Single

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**Shop now:** [https://www.desertcart.is/products/251936193-sae-15w-40-full-synthetic-diesel-engine-oil-api-ck](https://www.desertcart.is/products/251936193-sae-15w-40-full-synthetic-diesel-engine-oil-api-ck)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-08-11*