---
product_id: 236906708
title: "Schaeffer Manufacturing Co. 9000CK4-012S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Quart Bottle"
brand: "schaeffer manufacturing co"
price: "S$64"
currency: SGD
in_stock: true
reviews_count: 6
category: "Schaeffer Manufacturing Co"
url: https://www.desertcart.sg/products/236906708-schaeffer-manufacturing-co-9000ck4-012s-synshield-otr-plus-full-synthetic
store_origin: SG
region: Singapore
---

# High heat resistance Advanced friction modifiers Superior cold start Schaeffer Manufacturing Co. 9000CK4-012S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Quart Bottle

**Brand:** schaeffer manufacturing co
**Price:** S$64
**Availability:** ✅ In Stock

## Summary

> ⚙️ Drive smarter, last longer — the diesel oil pros swear by!

## Quick Answers

- **What is this?** Schaeffer Manufacturing Co. 9000CK4-012S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Quart Bottle by schaeffer manufacturing co
- **How much does it cost?** S$64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/236906708-schaeffer-manufacturing-co-9000ck4-012s-synshield-otr-plus-full-synthetic)

## 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

- • **Fuel-Smart Formula:** Maximize fuel economy without compromising engine strength.
- • **Cold-Start Champion:** Engine starts smoothly even in the harshest winter conditions.
- • **Friction-Fighting Tech:** Micron Moly & Penetro create a slick shield for peak engine efficiency.
- • **Heat-Defying Durability:** Withstands extreme temperatures better than conventional oils.
- • **Soot-Busting Clean Power:** Keeps your engine spotless with superior deposit control.

## Overview

Schaeffer SynShield OTR Plus 5W-40 is a full synthetic diesel engine oil engineered for heavy-duty trucks, delivering exceptional wear protection, fuel economy, and cold-weather performance. Featuring proprietary friction modifiers and superior soot control, it meets API CK-4 specs and supports modern emission systems, ensuring your diesel engine runs cleaner and stronger mile after mile.

## 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: The best! - Great oil currently running in a 2012 f350 6.7 diesel oil always looks good after 5,000 intervals
Review: Best oil for a diesel!!!! - I run the 5w40 in my 2019 ford f350 with the 6.7 powerstroke. Changed the oil fired it up let it run shut it off and checked oil. That oil was still clear!!! Even after 3000 miles it looks better than rotella t6. Highly recommend and only oil to run

## 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.
- Friction modified with Micron Moly and Penetro

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08BVVVSRL |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #122,311 in Automotive ( See Top 100 in Automotive ) #722 in Motor Oils |
| Brand | Schaeffer Manufacturing Co |
| Date First Available | June 25, 2020 |
| Item Weight | 1.79 pounds |
| Item model number | 9000CK4-012S |
| Manufacturer | Schaeffer Manufacturing Co. |
| Package Dimensions | 8.86 x 3.98 x 2.32 inches |
| SAE J300 Viscosity Grade | 5W-40 |
| Size | 1 Quart |
| UPC | 744954027675 |
| Vehicle Service Type | Truck, Diesel Engine |
| Viscosity | 5w-40 |

## Product Details

- **Brand:** Schaeffer Manufacturing Co
- **Liquid Volume:** 32 Fluid Ounces
- **Package Information:** Bottle
- **Vehicle Service Type:** Truck, Diesel Engine
- **Viscosity:** 5w-40

## Images

![Schaeffer Manufacturing Co. 9000CK4-012S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Quart Bottle - Image 1](https://m.media-amazon.com/images/I/71paAm8rWgL.jpg)
![Schaeffer Manufacturing Co. 9000CK4-012S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Quart Bottle - Image 2](https://m.media-amazon.com/images/I/71qnY2-6iML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ The best!
*by N***K on August 2, 2025*

Great oil currently running in a 2012 f350 6.7 diesel oil always looks good after 5,000 intervals

### ⭐⭐⭐⭐⭐ Best oil for a diesel!!!!
*by C***. on June 29, 2024*

I run the 5w40 in my 2019 ford f350 with the 6.7 powerstroke. Changed the oil fired it up let it run shut it off and checked oil. That oil was still clear!!! Even after 3000 miles it looks better than rotella t6. Highly recommend and only oil to run

### ⭐⭐⭐⭐⭐ The best diesel oil on the market
*by J***C on June 17, 2023*

I've run lots of the big-name diesel oils and run lab samples every other oil change. This oil simply the best and the lab results prove it.

## Frequently Bought Together

- Schaeffer Manufacturing Co. 9000CK4-012S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Quart Bottle
- Schaeffer Manufacturing Co. 9000CK4-006S SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Gallon Bottle
- Schaeffer Manufacturing Co. 9000CK4-012 SynShield OTR Plus Full Synthetic Diesel Engine Oil 5W-40, 1-Quart Bottle (Pack of 12)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-06*