---
product_id: 10617696
title: "STP Diesel Fuel Treatment & Injector Cleaner (20 Fluid Ounces)"
brand: "stp"
price: "€ 27.30"
currency: EUR
in_stock: false
reviews_count: 6
url: https://www.desertcart.fi/products/10617696-stp-diesel-fuel-treatment-and-injector-cleaner-20-fluid-ounces
store_origin: FI
region: Finland
---

# Treats up to 35 gallons Fights fuel line freeze & wax gel Prevents injector & pump wear STP Diesel Fuel Treatment & Injector Cleaner (20 Fluid Ounces)

**Brand:** stp
**Price:** € 27.30
**Availability:** ❌ Out of Stock

## Summary

> ⛽ Power up your diesel, leave the deposits behind!

## Quick Answers

- **What is this?** STP Diesel Fuel Treatment & Injector Cleaner (20 Fluid Ounces) by stp
- **How much does it cost?** € 27.30 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/10617696-stp-diesel-fuel-treatment-and-injector-cleaner-20-fluid-ounces)

## Best For

- stp enthusiasts

## Why This Product

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

## Key Features

- • **Beat the Cold:** Effectively fights fuel line freeze and wax gel formation to ensure smooth starts
- • **Keep Injectors Pristine:** Formulated to prevent deposit build-up and maintain peak injector performance
- • **Trusted by Diesel Drivers:** Proven to improve fuel lubricity and reduce wear, delivering better mileage and reliability
- • **Maximize Your Diesel Efficiency:** 20 oz bottle treats up to 35 gallons of fuel for long-lasting engine care
- • **Protect Against Corrosion & Rust:** Advanced formula guards your engine’s internal components for extended life

## Overview

STP Diesel Fuel Treatment & Injector Cleaner is a 20 oz additive designed to treat up to 35 gallons of diesel fuel. It prevents deposit build-up, corrosion, and rust in diesel engines while improving fuel lubricity and injector performance. Additionally, it combats fuel line freeze and wax gel formation, ensuring reliable engine operation in cold conditions.

## Description

20 oz Treats up to 35 gallons Fights injector & pump wear Diesel fuel treatment & injector cleaner

Review: I used this treatment on a trip to the beach ... - I used this treatment on a trip to the beach in my TDI Jetta VW. My car likes Marathon diesel fuel with STP additives so thought I would try this as Marathon stations are few down in SC. The bottle contains 20oz. of treatment so I used 10oz, on trip down and the remaining on the way home. We averaged 42mpg using this treatment and the car was loaded down. I will use this product again!
Review: Great diesel additive - but expensive on desertcart - Great diesel additive - just wish the desertcart / seller price was more competitive. I've found it cheaper online elsewhere.

## Features

- Formulated to help prevent deposit build-up in diesel engines
- Helps maintain diesel engine performance by keeping fuel injectors clean and improving lubricity of diesel fuel
- Helps maintain performance by preventing deposit build-up, corrosion and rust
- Helps fight fuel line freeze and wax gel formation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0009PCPSQ |
| Best Sellers Rank | #587,567 in Automotive ( See Top 100 in Automotive ) #4,777 in Automotive Replacement Fuel Injection Products |
| Brand | STP |
| Customer Reviews | 4.2 4.2 out of 5 stars (20) |
| Date First Available | August 17, 2005 |
| Is Discontinued By Manufacturer | Yes |
| Item Weight | 1 pounds |
| Item model number | 78380 |
| Manufacturer | STP |
| Manufacturer Part Number | 78380 |
| Model | (14240) DIESEL FUEL TREATMENT -- 20 OZ. |
| Product Dimensions | 5 x 3 x 9 inches |

## Product Details

- **Brand:** STP
- **Item Volume:** 591 Milliliters
- **Item Weight:** 1 Pounds
- **Number of Items:** 1
- **Unit Count:** 20 Fluid Ounces

## Images

![STP Diesel Fuel Treatment & Injector Cleaner (20 Fluid Ounces) - Image 1](https://m.media-amazon.com/images/I/81jU3WEf44L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ I used this treatment on a trip to the beach ...
*by R***. on October 13, 2015*

I used this treatment on a trip to the beach in my TDI Jetta VW. My car likes Marathon diesel fuel with STP additives so thought I would try this as Marathon stations are few down in SC. The bottle contains 20oz. of treatment so I used 10oz, on trip down and the remaining on the way home. We averaged 42mpg using this treatment and the car was loaded down. I will use this product again!

### ⭐⭐⭐ Great diesel additive - but expensive on Amazon
*by B***T on December 21, 2019*

Great diesel additive - just wish the Amazon / seller price was more competitive. I've found it cheaper online elsewhere.

### ⭐⭐⭐⭐ STP Diesel Engine Treatment and Injector Cleaner.
*by F***D on December 2, 2013*

Except for the pricing, this product performed very well for my use. Good performance in older diesel engines. Tunes up injectors well.

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**Shop now:** [https://www.desertcart.fi/products/10617696-stp-diesel-fuel-treatment-and-injector-cleaner-20-fluid-ounces](https://www.desertcart.fi/products/10617696-stp-diesel-fuel-treatment-and-injector-cleaner-20-fluid-ounces)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-08*