---
product_id: 44524385
title: "Stanadyne Diesel Fuel Additive Performance Formula All Season Protection, Half Gallon, Pack of 6"
brand: "stanadyne"
price: "€ 635.86"
currency: EUR
in_stock: true
reviews_count: 8
category: "Stanadyne"
url: https://www.desertcart.fi/products/44524385-stanadyne-diesel-fuel-additive-performance-formula-all-season-protection-half
store_origin: FI
region: Finland
---

# Optimizes combustion efficiency Reduces engine friction & wear All-season cold flow protection Stanadyne Diesel Fuel Additive Performance Formula All Season Protection, Half Gallon, Pack of 6

**Brand:** stanadyne
**Price:** € 635.86
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your diesel, all year round — don’t let your engine miss out!

## Quick Answers

- **What is this?** Stanadyne Diesel Fuel Additive Performance Formula All Season Protection, Half Gallon, Pack of 6 by stanadyne
- **How much does it cost?** € 635.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/44524385-stanadyne-diesel-fuel-additive-performance-formula-all-season-protection-half)

## Best For

- stanadyne enthusiasts

## Why This Product

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

## Key Features

- • **Heavy-Duty Reliability:** Perfect for daily drivers and commercial rigs alike, ensuring consistent power and peak performance under any load.
- • **OEM-Approved Performance:** Trusted by top manufacturers and proven in independent tests to keep your diesel engine running clean and smooth.
- • **Ultimate All-Weather Defense:** Prevents fuel gelling in freezing temps and boosts combustion in heat for year-round reliability.
- • **Emission & Efficiency Booster:** Reduces harmful emissions while improving throttle response and fuel economy—drive cleaner, drive smarter.
- • **Injector & Fuel System Savior:** Protects costly injectors and pumps by lubricating low-sulfur diesel fuels, extending engine life and saving $$$.

## Overview

Stanadyne Diesel Fuel Additive Performance Formula is a premium, OEM-approved all-season additive designed to enhance diesel fuel quality by preventing gelling, reducing engine friction, cleaning injectors, and optimizing combustion. Ideal for both everyday and heavy-duty use, it extends engine life, improves fuel economy, and lowers emissions, making it a must-have for diesel owners seeking reliable, efficient performance.

## Description

These additives improve diesel fuel quality to enhance efficiency, which improves fuel economy. They reduce engine friction, limit harmful emissions, and clean injectors of impurities, ensuring smoother operation and extended engine life. Designed for all-weather performance, they prevent fuel gelling in cold temperatures and optimize combustion in warmer climates. Additionally, they help reduce wear on critical engine components, improve throttle response, and maintain fuel system cleanliness for consistent power and reliability. Whether for everyday driving or heavy-duty applications, these additives maximize diesel engine efficiency and longevity.

Review: Saves high $$$ injectors - Great product if you want to protect around 2000 dollars worth of fuel injectors on your diesel. Lift pump, injector pump the entire fuel system. The low sulfur diesel that we all use has virtuality no lubricating properties. This stuff will lub em and protect. Stablizes fuel and has other performance benefits as well.
Review: This is the best fuel additive there is - About the same price that you can get it at Rural King just got it shipped free

## Features

- Approved by many OEMs
- Proven to perform best in independent testing
- The premium, all-season, all purpose diesel fuel additive, designed to tackle virtually any diesel fuel related problem.
- Meets Cummins L10 Superior Test for cleanliness
- Made by a fuel injection equipment manufacturer

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01LW5J88G |
| Best Sellers Rank | #203,934 in Automotive ( See Top 100 in Automotive ) #148 in Fuel Additives |
| Brand | Stanadyne |
| Customer Reviews | 4.7 4.7 out of 5 stars (113) |
| Date First Available | September 9, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 22.8 pounds |
| Item model number | STANADYNE |
| Manufacturer | Stanadyne |
| Manufacturer Part Number | 38566C |
| Model | STANADYNE 6 PACK |
| OEM Part Number | 38566C |
| Product Dimensions | 12 x 10.5 x 10 inches |
| Special Features | Authorized Stanadyne Dealers: 1) Diamond Diesel & Turbocharger Service |

## Images

![Stanadyne Diesel Fuel Additive Performance Formula All Season Protection, Half Gallon, Pack of 6 - Image 1](https://m.media-amazon.com/images/I/81tDidvxmJL.jpg)
![Stanadyne Diesel Fuel Additive Performance Formula All Season Protection, Half Gallon, Pack of 6 - Image 2](https://m.media-amazon.com/images/I/81hNKNV1BiL.jpg)
![Stanadyne Diesel Fuel Additive Performance Formula All Season Protection, Half Gallon, Pack of 6 - Image 3](https://m.media-amazon.com/images/I/917klzSma0L.jpg)
![Stanadyne Diesel Fuel Additive Performance Formula All Season Protection, Half Gallon, Pack of 6 - Image 4](https://m.media-amazon.com/images/I/81YocGm9aNL.jpg)
![Stanadyne Diesel Fuel Additive Performance Formula All Season Protection, Half Gallon, Pack of 6 - Image 5](https://m.media-amazon.com/images/I/81A28YHoA3L.jpg)

## Questions & Answers

**Q: May i have the exact size of packaging for this 6pack 1/2 gallon? Thanks**
A: It is a good size box.  About 18 " by 18" by 12"

**Q: Is there a shelf life?**
A: Yes, shelf life about two years before additives start to deteriorate for efficiency.

**Q: Is it anti gel?**
A: I don't believe the company makes an anti gel product however the Diesel Fuel Additive is specifically formulated to keep injectors clean, and for that it works. A number of pro truckers recommended Stanadyne when I bought my first diesel. It's turning 200K without a hint of injector issues.

As for anti gel STA-BIL Diesel Winter Ant-Gel is a good product found right here on Amazon.

**Q: Is this the same in smaller bottle?**
A: Exact same stuff.  I ordered the small bottles first and then ordered the half gallon jugs to refill the smaller bottles after i used them.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Saves high $$$ injectors
*by P***T on April 29, 2018*

Great product if you want to protect around 2000 dollars worth of fuel injectors on your diesel. Lift pump, injector pump the entire fuel system. The low sulfur diesel that we all use has virtuality no lubricating properties. This stuff will lub em and protect. Stablizes fuel and has other performance benefits as well.

### ⭐⭐⭐⭐⭐ This is the best fuel additive there is
*by D***N on December 8, 2025*

About the same price that you can get it at Rural King just got it shipped free

### ⭐⭐⭐⭐⭐ Good product
*by S***N on August 8, 2019*

Use this product on my boat when adding diesel fuel. Does a good job and I recommend but I do think the price is a bit high.

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**Shop now:** [https://www.desertcart.fi/products/44524385-stanadyne-diesel-fuel-additive-performance-formula-all-season-protection-half](https://www.desertcart.fi/products/44524385-stanadyne-diesel-fuel-additive-performance-formula-all-season-protection-half)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-12*