---
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: "₨3131"
currency: SCR
in_stock: true
reviews_count: 8
category: "Ultra 1 Plus"
url: https://www.desertcart.sc/products/504059816-sae-15w-40-full-synthetic-heavy-duty-diesel-engine-oil
store_origin: SC
region: Seychelles
---

# Full synthetic - reduces oil consumption 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:** ₨3131
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your diesel with the ultimate synthetic edge!

## 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?** ₨3131 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/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

- • **Fuel-Saving Synthetic Blend:** Minimizes oil consumption across all driving conditions, reducing maintenance frequency and costs.
- • **Unmatched Thermal Stability:** Maintains viscosity and performance even under extreme heat, protecting your engine from breakdown.
- • **Next-Level Engine Protection:** Advanced formula fights oxidation, wear, and soot buildup to extend engine life and efficiency.
- • **Future-Ready Emission Support:** Optimized for 2020+ diesel engines with advanced after-treatment systems, ensuring compliance and durability.
- • **Certified Performance Excellence:** Exceeds API CK-4, CJ-4, CI-4 PLUS standards for heavy-duty diesel engines—trusted by pros.

## Overview

Ultra 1Plus SAE 15W-40 Full Synthetic Heavy-Duty Diesel Engine Oil delivers superior protection and performance for modern and legacy diesel engines. Engineered with a premium synthetic base and advanced additives, it resists thermal breakdown, reduces oil consumption, and supports emission control systems. Certified to exceed API CK-4/SN standards, this 1-gallon motor oil is the go-to choice for professionals demanding reliability and efficiency in every mile.

## 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: 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

- 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 | #152,123 in Automotive ( See Top 100 in Automotive ) #793 in Motor Oils |
| Brand | ULTRA 1PLUS |
| Customer Reviews | 4.6 4.6 out of 5 stars (65) |
| 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

### ⭐⭐⭐⭐⭐ 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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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-02-01*