---
product_id: 6914051
title: "Stanadyne Diesel Performance Formula 38566, 64 Ounce"
brand: "stanadyne"
price: "13667 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Stanadyne"
url: https://www.desertcart.is/products/6914051-stanadyne-diesel-performance-formula-38566-64-ounce
store_origin: IS
region: Iceland
---

# Treats 240 gallons diesel Restores horsepower & torque OEM-approved engine protection Stanadyne Diesel Performance Formula 38566, 64 Ounce

**Brand:** stanadyne
**Price:** 13667 kr
**Availability:** ✅ In Stock

## Summary

> 🛢️ Power up your diesel, dominate the road with Stanadyne!

## Quick Answers

- **What is this?** Stanadyne Diesel Performance Formula 38566, 64 Ounce by stanadyne
- **How much does it cost?** 13667 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/6914051-stanadyne-diesel-performance-formula-38566-64-ounce)

## 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

- • **Fuel Economy Booster:** Detergent & cetane improver enhances mileage and power output
- • **Heavy-Duty Protection:** Meets Cummins L10 Superior Test for superior fuel cleanliness
- • **Flexible Dosing Advantage:** Safe to blend or double-dose for tailored engine care
- • **Universal Diesel Defender:** Compatible with GM, Ford, Deere, Navistar & more for year-round use
- • **Proven Performance Formula:** Top-rated in independent tests, trusted by OEMs

## Overview

Stanadyne Diesel Performance Formula 38566 is a premium 64oz additive designed to treat up to 240 gallons of diesel fuel. Approved by major OEMs like GM and Ford, it improves fuel economy, horsepower, and torque while protecting engines year-round. Tested to meet Cummins L10 standards, this additive ensures superior fuel cleanliness and reliable performance for trucks, buses, and heavy-duty vehicles.

## Description

Stanadyne Performance Formula protects your diesel engine and restores engine performance. The detergent and cetane improver in Performance Formula will help restore fuel economy, increase horsepower and torque. Stanadyne Performance Formula 1/2 gallon (64 ounce) jug treats 240 gallons diesel fuel. Note: All Stanadyne Diesel Fuel Additives can be blended with each other and "double-dosing" is not damaging - although it may not provide twice the benefit. Where engine and vehicle OEMs have approved Stanadyne, most of them recommend Performance Formula, which should be used year-round to ensure protection against fuel related problems.

Review: Great product - Awesome product. Great price. Use it in my 2018 Duramax.
Review: Fuel treatment - Works great treating fuel.

## Features

- Approved by many OEMs including GM, Ford, Deere & Navistar
- 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 | B000M5QPSY |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | #17,845 in Automotive ( See Top 100 in Automotive ) #28 in Diesel Additives |
| Brand | Stanadyne |
| Customer Reviews | 4.8 4.8 out of 5 stars (727) |
| Date First Available | December 22, 2006 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 3.78 pounds |
| Item model number | 5 |
| Manufacturer | Stanadyne |
| Manufacturer Part Number | 38566 |
| OEM Part Number | 38566 |
| Product Dimensions | 6 x 3 x 9.5 inches |
| Size | 64oz |
| UPC | 753167924442 026508385661 |
| Vehicle Service Type | Bus, Truck |

## Product Details

- **Brand:** Stanadyne
- **Liquid Volume:** 64 Fluid Ounces
- **Package Information:** Can, Jug
- **UPC:** 753167924442 026508385661
- **Vehicle Service Type:** Bus, Truck

## Images

![Stanadyne Diesel Performance Formula 38566, 64 Ounce - Image 1](https://m.media-amazon.com/images/I/81pv14WSKLL.jpg)

## Questions & Answers

**Q: does it contain antigel**
A: The performance does have a antigel     the winter formula is for extreme cold weather

**Q: Is this compatable with def (diesel exhaust fluid) engines.  i'm in ca and have a 2011 duromax.**
A: Like other popular additives on the market, the use does not have any bearing on the use of DEF as the DEF is part of the "after combustion stage" of any modern pick-up truck diesel engine.  Stanadyne additive is one of the better additives with regards to helping to keep the injectors lubricated during use which also helps to keep them clean and therefore greatly aides in cooling the injectors which are the 3 components of any good diesel fuel; Fuel for combustian-Lubrication of pumps & injectors-Cooling of Injectors, therefore, longer life expectancy!  The idea of increasing the cetane rating might be true for some of the additives one can buy, but that is really not the reason to buy any diesel additive!  DEF is injected after the combustion process and only used to help dissolve and burn out any particulate matter being emitted in the exhaust.

**Q: How often do you use it? Is every fill up ok?**
A: Yes I use 6oz every fill up it is great for the engine and increases power

**Q: What is the dosing ratio of additive to diesel fuel?**
A: .26 ounces per gallon of diesel.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by M***B on March 5, 2026*

Awesome product. Great price. Use it in my 2018 Duramax.

### ⭐⭐⭐⭐⭐ Fuel treatment
*by T***M on January 6, 2026*

Works great treating fuel.

### ⭐⭐⭐⭐⭐ Great for my Diesel
*by A***R on February 7, 2026*

Great value and quality product

## Frequently Bought Together

- Stanadyne Diesel Performance Formula 38566, 64 Ounce
- Stanadyne 38561 Diesel Lubricity Formula, 64 oz
- Stanadyne 43566 Performance Formula Injector Cleaner, 32 oz

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---

*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-21*