---
product_id: 792229065
title: "Octane Booster (5.25 fl oz), 78574, Fuel Additive"
price: "€ 6387.90"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/792229065-octane-booster-5-25-fl-oz-78574-fuel-additive
store_origin: FI
region: Finland
---

# Octane Booster (5.25 fl oz), 78574, Fuel Additive

**Price:** € 6387.90
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Octane Booster (5.25 fl oz), 78574, Fuel Additive
- **How much does it cost?** € 6387.90 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/792229065-octane-booster-5-25-fl-oz-78574-fuel-additive)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Octane Booster (5.25 fl oz), 78574, Fuel Additive

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | STP |
| Brand | STP |
| Model | 78574 |
| Item Weight | 5.5 ounces |
| Product Dimensions | 1.5 x 2.3 x 8 inches |
| Item model number | 78574 |
| Is Discontinued By Manufacturer | No |
| Exterior | [[Not Applicable]] |
| Manufacturer Part Number | 78574 |
| Position | Outside |
| Voltage | 12 Volts |

## Images

![Octane Booster (5.25 fl oz), 78574, Fuel Additive - Image 1](https://m.media-amazon.com/images/I/61E16T9sUjL.jpg)

## Questions & Answers

**Q: How many gallons does it treat?**
A: The front of the container states "Treats up to 21 gallons" -- my husband uses this product in our 1965 Mustang, which has a tank size of  16 gallons.  Depending on how often he drives the car and fills the gas tank, he uses 1 bottle with each fill up.    I hope this answers some of your question.

**Q: does this work on a 2 stroke?**
A: Does your 2 stroke recommend a higher octane - 89+ and you can't get the fuel? if so, use it

**Q: Is this safe for use with catalytic converters?**
A: I am using it in a 66 Mustang and a 73 Z28 neither have converters, so not sure

**Q: Will this stuff boost 93 octane to 95?**
A: Yes, I think it is a gain of just under 2.5 octane numbers when added to 12 or 14 gallons.

## Frequently Bought Together

- STP Octane Booster for Gasoline Fuel Additive, 5.25 oz, Fuel Additive That Raises Octane Levels and Cleans the Fuel Intake System to Restore Lost Power and Acceleration, Help Improve MPG
- STP Ultra 5 In 1 Fuel System Cleaner and Stabilizer, Deep Cleans Fuel System and Fights Engine Friction, 12 FlOz
- STP Complete Fuel System Cleaner, Fuel Cleaner Deep Cleans Entire Fuel System, 5.25 Oz, Multicoloured, 1 Count (Pack of 1)

---

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**Shop now:** [https://www.desertcart.fi/products/792229065-octane-booster-5-25-fl-oz-78574-fuel-additive](https://www.desertcart.fi/products/792229065-octane-booster-5-25-fl-oz-78574-fuel-additive)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-18*