---
product_id: 79912693
title: "Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12"
brand: "stanadyne"
price: "$581"
currency: NZD
in_stock: true
reviews_count: 8
category: "Stanadyne"
url: https://www.desertcart.nz/products/79912693-performance-formula-diesel-fuel-additive-16-oz-case-of-12
store_origin: NZ
region: New Zealand
---

# Up to 9.6% better fuel efficiency Lowers emissions & smoke output Boosts horsepower by cleaning injection system Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12

**Brand:** stanadyne
**Price:** $581
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock diesel dominance with every drop!

## Quick Answers

- **What is this?** Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12 by stanadyne
- **How much does it cost?** $581 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/79912693-performance-formula-diesel-fuel-additive-16-oz-case-of-12)

## 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

- • **Protect & Preserve:** Lubricity additives shield critical components from wear, extending engine life.
- • **Power Up Your Drive:** Detergents clear fuel system deposits to restore peak horsepower and throttle response.
- • **Eco-Friendly Performance:** Reduces smoke and particulate emissions, aligning with modern clean diesel standards.
- • **Fuel Smarter, Not Harder:** Proven average 4% MPG improvement means fewer stops and more miles per tank.
- • **Smooth Start, Quiet Ride:** Cetane improver enhances combustion for faster starts and reduced engine noise.

## Overview

Stanadyne Performance Formula is a comprehensive diesel fuel additive designed to clean, lubricate, and boost combustion efficiency. Each 16 oz bottle treats 60 gallons of diesel, improving horsepower, fuel economy by up to 9.6%, and reducing emissions. Trusted by OEMs and mechanics alike, it’s the all-in-one solution for year-round diesel engine protection and performance enhancement.

## Description

Stanadyne Performance Formula Pint Bottle 16oz., Case of 12 Bottles Treats 60 gallons diesel fuel per Bottle 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: Everything you need in one bottle - I drive a 2016 Ram 3500 with the Aisin transmission so I have the highest of the 3 power ratings the Cummins come with for that model year. I've always run an additive in it since the day I bought it. I was using another brand that is sometimes considered number one depending on the review you're reading. In a lot of the reviews I came across this additive was also at the top so I decided to do some more research. One of the first things I liked is that it's developed by a company that makes fuel system components for diesels. The second is that it's actually endorsed by some of the vehicle manufacturers. Third is that everything you need (cleaning, lubrication, cetane booster, winterizer/anti-gel and so on) is in one bottle. I called Stanadyne because you can get bottles for one specific purpose such as lubricity or winterizer and I was curious if those are more effective at doing that specific job than the blue bottle that contains them all in one. They do not, it's just as effective in the blue bottle as it is in the individual bottles however, the treatment ratio is different. I was still hesitant to purchase this stuff since I couldn't buy it in the big jugs like I could the other stuff. I decided to check on here and to my surprise I came across this case right here. This is an excellent value and the product is great. I'm a mechanic and very maintenance cautious, I strongly believe in preventative maintenance and just taking care of your vehicle in general. With diesel being what it is these days and the costs of fuel system components, anything I can do to preserve or extend the life of the components, I'm all for it. Since my truck isn't very old and I've used another additive prior to converting to this, I didn't have performance issues. One thing I was very happy to notice is the fuel mileage, according to the data screen on my truck. I've never seen better 17.7 to 18.0 MPG average on the highway. I drove to the beach and back the other day and was averaging 19.2 last time I looked at it before I made it home. While that may not be a significant increase, I was certainly pleased. I will continue using this stuff from now on and I will buy all my cases from right here as I've looked and not found a better deal for a case yet.
Review: So far so GREAT. - My check engine light was on and the code was saying I was either running way too lean or to hot. My gas millage that accounts for the last 500 miles dipped from 13.8 to 13.2 quite quickly so I assume I was running way to lean. Knowing I had the additive coming I let it go until it arrived. I am one tank into using the additive and the check engine light is off and my fuel mileage is working back toward what is more normal. I am only one tank it but so far it seems to we working wonderfully.

## Features

- Restores/Increase Horsepower: detergents clean deposits in the injection system
- Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent
- Cetane Improver improves combustion resulting in better engine starting, running and reduced noise
- Reduces Wear: Lubricity improvers restore lubricity to ultra low sulfur diesel fuels
- Reduces Emissions reduces Smoke and Particulates

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000M46TEU |
| Best Sellers Rank | #20,366 in Automotive ( See Top 100 in Automotive ) #42 in Diesel Additives |
| Brand | Stanadyne |
| Bulb Type | Southwest Diesel - Authorized Distributor |
| Customer Reviews | 4.8 4.8 out of 5 stars (845) |
| Date First Available | December 20, 2006 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.01 ounces |
| Item model number | add38565 |
| Manufacturer | Stanadyne |
| Manufacturer Part Number | 38565C |
| Mirror Adjustment | Helps Remove Water – special demulsifiers cause tiny water droplets to come out of suspension/emulsion, so the filter/separator can more effectively remove water |
| OEM Part Number | 38565C |
| Product Dimensions | 11 x 9 x 10 inches |
| Special Features | Specially Formulated for use with ultra low sulfur diesel fuel Can be used with Bio Diesel Fuel up to B20 (20% bio content approved ) |

## Images

![Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12 - Image 1](https://m.media-amazon.com/images/I/91y4aYYCk9L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Everything you need in one bottle
*by T***. on June 14, 2017*

I drive a 2016 Ram 3500 with the Aisin transmission so I have the highest of the 3 power ratings the Cummins come with for that model year. I've always run an additive in it since the day I bought it. I was using another brand that is sometimes considered number one depending on the review you're reading. In a lot of the reviews I came across this additive was also at the top so I decided to do some more research. One of the first things I liked is that it's developed by a company that makes fuel system components for diesels. The second is that it's actually endorsed by some of the vehicle manufacturers. Third is that everything you need (cleaning, lubrication, cetane booster, winterizer/anti-gel and so on) is in one bottle. I called Stanadyne because you can get bottles for one specific purpose such as lubricity or winterizer and I was curious if those are more effective at doing that specific job than the blue bottle that contains them all in one. They do not, it's just as effective in the blue bottle as it is in the individual bottles however, the treatment ratio is different. I was still hesitant to purchase this stuff since I couldn't buy it in the big jugs like I could the other stuff. I decided to check on here and to my surprise I came across this case right here. This is an excellent value and the product is great. I'm a mechanic and very maintenance cautious, I strongly believe in preventative maintenance and just taking care of your vehicle in general. With diesel being what it is these days and the costs of fuel system components, anything I can do to preserve or extend the life of the components, I'm all for it. Since my truck isn't very old and I've used another additive prior to converting to this, I didn't have performance issues. One thing I was very happy to notice is the fuel mileage, according to the data screen on my truck. I've never seen better 17.7 to 18.0 MPG average on the highway. I drove to the beach and back the other day and was averaging 19.2 last time I looked at it before I made it home. While that may not be a significant increase, I was certainly pleased. I will continue using this stuff from now on and I will buy all my cases from right here as I've looked and not found a better deal for a case yet.

### ⭐⭐⭐⭐⭐ So far so GREAT.
*by D***G on May 20, 2025*

My check engine light was on and the code was saying I was either running way too lean or to hot. My gas millage that accounts for the last 500 miles dipped from 13.8 to 13.2 quite quickly so I assume I was running way to lean. Knowing I had the additive coming I let it go until it arrived. I am one tank into using the additive and the check engine light is off and my fuel mileage is working back toward what is more normal. I am only one tank it but so far it seems to we working wonderfully.

### ⭐⭐⭐⭐⭐ This product keeps the diesel engine fuel burning clean, never no black smoke
*by D***E on February 1, 2026*

Been using this product in our Doge Ram since we bought new in 2012. It always passes the E check every time.

## Frequently Bought Together

- Stanadyne Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12
- Stanadyne Winter 1000 16oz Pint Bottles - Pack of 4 - Part # 38574
- Stanadyne Performance * Diesel Injector Cleaner * QTY of 4 - 8oz bottles #43562

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-24*