---
product_id: 218633336
title: "9000CK4-006S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Gallon Bottle"
brand: "schaeffer manufacturing co"
price: "4788267₫"
currency: VND
in_stock: true
reviews_count: 8
category: "Schaeffer Manufacturing Co"
url: https://www.desertcart.vn/products/218633336-9000ck4-006s-synshield-otr-plus-full-synthetic-diesel-engine-oil
store_origin: VN
region: Vietnam
---

# Maintains fuel economy Withstands higher heat range Superior cold weather startability 9000CK4-006S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Gallon Bottle

**Brand:** schaeffer manufacturing co
**Price:** 4788267₫
**Availability:** ✅ In Stock

## Summary

> 🚛 Power your diesel with the ultimate synthetic edge!

## Quick Answers

- **What is this?** 9000CK4-006S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Gallon Bottle by schaeffer manufacturing co
- **How much does it cost?** 4788267₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/218633336-9000ck4-006s-synshield-otr-plus-full-synthetic-diesel-engine-oil)

## Best For

- schaeffer manufacturing co enthusiasts

## Why This Product

- Trusted schaeffer manufacturing co brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Cold Start Champion:** Optimized 5W-40 viscosity ensures rapid, reliable starts even in freezing temperatures.
- • **Fuel Economy Booster:** Advanced friction modifiers reduce drag, helping you save at the pump without sacrificing power.
- • **Engine Armor in a Bottle:** Full synthetic formula shields against wear, oxidation, and soot buildup for unmatched engine longevity.
- • **Emission-Ready Performance:** Meets API CK-4 specs and supports modern emission systems like DPF, DOC, and SCR for cleaner operation.
- • **Proven Heavy-Duty Reliability:** Trusted by diesel pros to keep engines running smoother, longer—even under the toughest conditions.

## Overview

Schaeffer Manufacturing Co.'s SynShield OTR Plus 5W-40 is a premium full synthetic diesel engine oil designed for heavy-duty use. It delivers superior protection against wear, deposits, and soot while enhancing fuel economy and cold weather startability. Compatible with modern emission control systems and meeting API CK-4 standards, this 1-gallon oil is engineered to extend engine life and optimize performance in demanding diesel engines.

## Description

Schaeffers SynShield OTR Plus 5W40 Full Synthetic Oil is a premium advanced performance, synthetic plus, heavy-duty diesel engine oil formulated to provide maximum protection against wear, oxidation, deposit formation, soot contamination and aeration. SynShield OTR Plus 5W40 Full Synthetic provides excellent fuel economy while maintaining engine durability and longevity. Using our proprietary friction modifiers, Micron Moly and Penetro, SynShield OTR Plus 5W40 Full Synthetic creates a slippery, tenacious shield that prevents metal-to-metal contact for increased engine efficiency. SynShield OTR Plus 5W40 Full Synthetic is suitable for use in 2007 and 2010 emission complaint engines that utilize heavy exhaust gas recirculation (EGR) and exhaust after-treatment devices such as diesel particulate filters (DPFs) with or without diesel oxidation catalysts (DOCs) and selective catalytic reduction (SCR). Schaeffer’s 5W40 is suitable for use API CK-4 specifications.

Review: PLEASE READ THIS! - A friend inherited an ‘05 6.0 PSD and had no idea what maintenance had or had not been performed on it — a respected independent diesel shop later told us that the truck had not been well maintained. I started the engine and noticed it took a few more revolutions to get the engine to fire. I checked the oil and it was as black as the tires. Not knowing anything about the 6.0, I bought a non Motorcraft oil filter and a non synthetic 15W40 diesel oil. The engine continued taking more revolutions than I thought was normal to get it started. I read up on the 6.0 PSD and found that I definitely purchased the wrong filter and likely the wrong oil. I purchased a Motorcraft filter AND CAP, Schaeffer’s 5W40 full synthetic and Archoil Friction Modifier. Approximately 100 miles into the second oil change the 6.0 started in one half the time that it took with the other products. I’m still sold on changing the oil and filter every three thousand miles. Three thousand miles later, I was pleasantly surprised at how clean the used oil was. On the 6.0 PSD I would suggest Schaeffer’s 5W40, a Motorcraft filter AND CAP along with the Archoil Friction Modifier. I would also suggest using the Archoil diesel fuel additive. I know that this stuff is expensive, but it makes her 6.0 happy! This regimen, a thorough servicing and detail has turned this into a nice truck.
Review: The only oil I'll put in my diesel - Best oil ever made

## Features

- Maintains Fuel Economy Without Sacrificing Engine Durability.
- Superior Cold Weather Startability And Operating Characteristics.
- Oil Strength: Withstands Higher Heat Range Than Conventional Oils.
- Keep-Clean Performance: Superior Soot Busting, Deposit-Dispersing Capability.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08BW72P1H |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #20,443 in Automotive ( See Top 100 in Automotive ) #211 in Motor Oils |
| Brand | Schaeffer Manufacturing Co |
| Date First Available | June 25, 2020 |
| Item Weight | 7.52 pounds |
| Item model number | 9000CK4-006S |
| Manufacturer | Schaeffer Manufacturing Co. |
| Package Dimensions | 10.91 x 7.8 x 4.53 inches |
| SAE J300 Viscosity Grade | 5W-40 |
| Size | 1 Gallon |
| UPC | 744954027651 |
| Vehicle Service Type | Diesel Engines, Low-Emission Certified Vehicles, Older Models, Off-Highway Diesel Engines |
| Viscosity | 5w-40 |

## Product Details

- **Brand:** Schaeffer Manufacturing Co
- **Liquid Volume:** 128 Fluid Ounces
- **Package Information:** Bottle
- **Vehicle Service Type:** Diesel Engines, Low-Emission Certified Vehicles, Older Models, Off-Highway Diesel Engines
- **Viscosity:** 5w-40

## Images

![9000CK4-006S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Gallon Bottle - Image 1](https://m.media-amazon.com/images/I/81FW4zfmzFL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ PLEASE READ THIS!
*by J***N on December 28, 2025*

A friend inherited an ‘05 6.0 PSD and had no idea what maintenance had or had not been performed on it — a respected independent diesel shop later told us that the truck had not been well maintained. I started the engine and noticed it took a few more revolutions to get the engine to fire. I checked the oil and it was as black as the tires. Not knowing anything about the 6.0, I bought a non Motorcraft oil filter and a non synthetic 15W40 diesel oil. The engine continued taking more revolutions than I thought was normal to get it started. I read up on the 6.0 PSD and found that I definitely purchased the wrong filter and likely the wrong oil. I purchased a Motorcraft filter AND CAP, Schaeffer’s 5W40 full synthetic and Archoil Friction Modifier. Approximately 100 miles into the second oil change the 6.0 started in one half the time that it took with the other products. I’m still sold on changing the oil and filter every three thousand miles. Three thousand miles later, I was pleasantly surprised at how clean the used oil was. On the 6.0 PSD I would suggest Schaeffer’s 5W40, a Motorcraft filter AND CAP along with the Archoil Friction Modifier. I would also suggest using the Archoil diesel fuel additive. I know that this stuff is expensive, but it makes her 6.0 happy! This regimen, a thorough servicing and detail has turned this into a nice truck.

### ⭐⭐⭐⭐⭐ The only oil I'll put in my diesel
*by B***R on December 13, 2025*

Best oil ever made

### ⭐⭐⭐⭐⭐ In a league of its own.
*by D***A on August 2, 2025*

Truly in a league of its own. I did a ton of research before choosing this oil for the first oil change in my 6.7 Cummins. I've got to say that I am beyond thrilled with the results. I could immediately tell a dramatic improvement in the engine power, acceleration and responsiveness. I also noticed the engine noise is quieter now and there's no noticeable ticking noises either. The increased performance truly makes the truck even more fun to drive!

## Frequently Bought Together

- Schaeffer Manufacturing Co. 9000CK4-006S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Gallon Bottle
- Motorcraft Oil Filter - FL2124S (Replaces FL2051S)
- Schaeffer Manufacturing Co. 9000CK4-012S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Quart Bottle

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-15*