---
product_id: 47954628
title: "Briggs & Stratton Fuel Fit Additive/Stabiliser. 992381"
brand: "briggs & stratton"
price: "€ 34.99"
currency: EUR
in_stock: true
reviews_count: 12
category: "Briggs & Stratton"
url: https://www.desertcart.sk/products/47954628-briggs-and-stratton-fuel-fit-additive-stabiliser-992381
store_origin: SK
region: Slovakia
---

# Keeps fuel fresh up to 3 years Detergents prevent gum & varnish build-up Protects against ethanol corrosion Briggs & Stratton Fuel Fit Additive/Stabiliser. 992381

**Brand:** briggs & stratton
**Price:** € 34.99
**Availability:** ✅ In Stock

## Summary

> 🛢️ Fuel Fit: The ultimate power-up your engine deserves!

## Quick Answers

- **What is this?** Briggs & Stratton Fuel Fit Additive/Stabiliser. 992381 by briggs & stratton
- **How much does it cost?** € 34.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/47954628-briggs-and-stratton-fuel-fit-additive-stabiliser-992381)

## Best For

- briggs & stratton enthusiasts

## Why This Product

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

## Key Features

- • **Engine Clean Start:** Detergent ingredients keep carburettors clean for smooth, reliable starts every time.
- • **Corrosion Barrier Boost:** Metal de-activators form a protective layer, extending engine life and performance.
- • **Ethanol Corrosion Defense:** Advanced formula shields metal parts from damaging ethanol-water mix.
- • **Trusted by Pros & Classics:** Preferred by mechanics and classic vehicle owners to avoid expensive rebuilds.
- • **Long-lasting Fuel Freshness:** Stabilizes fuel for up to 3 years, eliminating costly stale fuel issues.

## Overview

Briggs & Stratton Fuel Fit Additive/Stabiliser (250ml) is a premium fuel additive designed to keep fuel fresh for up to 3 years while protecting engines from ethanol-induced corrosion. Its advanced detergent and metal de-activator formula prevents gum, varnish build-up, and corrosion, ensuring easy starts and prolonged engine life—ideal for classic vehicles and infrequent use.

## Description

Product Description Briggs & Stratton's new and improved Fuel Fit keeps fuel fresh and protects engines more than ever before. Fuel Fit not only keeps the carburettor clean for easy starting but now also protects against the corrosive effects of ethanol and maintains fuel stability for up to 3 years. Box Contains 1 x Briggs & Stratton Fuel Fit 250ml bottle

Review: Great - Ideal genuine item
Review: WHY YOU SHOULD READ THIS IF YOUR VEHICLE IS OVER TWENTY-FIVE YEARS OLD, OR NOT USED MUCH - I've been using this stuff for years on the recommendation of my bike mechanic. I run a 1983 Suzuki Katana which doesn't get as much use as I'd like & can go 4-6 weeks between runs (criminal) & is usually laid up during the winter. This has the effect of "gumming-up" & "varnishing" the fuel system, especially the carbs, resulting in a time consuming & COSTLY strip down & rebuild - believe me, I speak from experience. Big Pete put me onto this stuff after said rebuild & I use it throughout the season in both my bike (& my mower). I top my tank up with petrol, then add this when I get home at the end of a run, letting the engine idle on tick-over just to get it through the system. The other thing you may not be aware of is that petrol goes "off" in as short a space of time as a month - that's why if you leave fuel in your mower over winter, you will struggle to start it - this stuff will stabilise the petrol meaning that it remains fresher. Again, useful if you only manage to get out on your bike once a month. However, contrary to what other reviewers say, this product WILL NOT protect against ethanol corrosion (but see update below)- do not use this product thinking you are protected against Ethanol corrosion - "The 999005E 125ml fuel additive has now been replaced with a 250ml bottle under part number 992381. This new formula is designed to work with and protect petrol which contains up to 10% ethanol. Most current UK petrol contains 5% ethanol. The older additive did not offer this protection hence its replacement. Available to you via your normal supplier. I hope this helps." - (Briggs & Strattons' response to the request for clarification as to whether this product offers Ethanol protection). Ever heard of Ethanol Corrosion? If your car or bike is less than twenty-five years old , don't worry. If, on the other hand, you run a classic vehicle (& I don't mean 50-60 years old but on some, less than 25 years old. Best check the exact age for your own vehicle but generally anything from before the early nineties or anything with a carburettor)then you do need to be aware of this potentially costly issue. "The greatest risk from ethanol in unleaded fuel is corrosion from the prolonged storage of fuel in the fuel tank. Classic fuel tanks are commonly made up of lead/tin alloy plated steel that is susceptible to ethanol corrosion. Ethanol is also corrosive to other metallic components including zinc, brass, lead and aluminium which will degrade over time under prolonged exposure to ethanol. In addition ethanol will also attack non-metallic materials such as rubber, cork gasket & leather that can result in costly problems with fuel hoses, seals, washers and gaskets." (Millers Oils) - Technically, it's not the Ethanol itself that causes corrosion, but the water in the Ethanol. Do a bit of research & do something about it. You can either replace the entire fuel system or use an additive - I'm lazy so I use an additive. But not this one - it does not offer Ethanol Protection!! There are a few companies that offer additives (Millers, Frosts, Flexolite) - I use Flexolite, mainly because the mix ratio is low enough to be able to carry it with me whilst I'm out. So does this stuff work? Well so far the carbs have not have to be stripped & rebuilt again, so I'm going to say yes. But do some research about Ethanol in fuel systems - it will scare the pants off you. Please note - I am not an expert, but have done a lot of reading about it. UPDATE - 01.11.13 In case you're thinking I've lost my marbles, this is NOT the product I originally reviewed. That has been replaced by the newer version which DOES protect against Ethanol corrosion as mentioned in the Briggs & Stratton email. I've left the original review in the hope that people will start to wake up to the issues surrounding Ethanol

## Features

- Causes damage to organs through prolonged or repeated exposure.
- Harmful to aquatic life with long lasting effects.
- May be fatal if swallowed and enters airways.
- Repeated exposure may cause skin dryness or cracking.
- Keeps fuel fresh for up to 3 years
- Fuel Fit not only keeps the carburettor clean for easy starting but now also protects against the corrosive effects of ethanol
- Detergent ingredients to prevent gum and varnish build-up on engine parts
- Metal de-activators which stop chemical reactions caused by dissolved metals in fuel
- Corrosion inhibitor that forms a protective barrier on metal parts against harmful effects of ethanol-water mix

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003374F9E |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 299 in Automotive ( See Top 100 in Automotive ) 16 in Fuel Systems |
| Colour | Pink |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,248) |
| Date First Available | 7 Jan. 2010 |
| Item Package Quantity | 1 |
| Item Weight | 270 g |
| Item model number | 992381 |
| Manufacturer | Briggs & Stratton |
| Material | Metal |
| Package Dimensions | 19.2 x 9.4 x 4.2 cm; 270 g |
| Part Number | 992381 |
| Size | 1/4" or 3/8" |
| Style | Original packaging |
| Volume | 0.25 Litres |

## Product Details

- **Brand:** Briggs & Stratton
- **Exterior finish:** Metal
- **Inlet connection type:** Thread
- **Manufacturer:** Briggs & Stratton
- **Material:** Metal
- **Number of ports:** 2
- **Outlet connection type:** NPT
- **UPC:** 798256131028

## Images

![Briggs & Stratton Fuel Fit Additive/Stabiliser. 992381 - Image 1](https://m.media-amazon.com/images/I/412iXt05ORL.jpg)

## Questions & Answers

**Q: How many litres of fuel will this 250ml bottle treat?**
A: The bottle has a 10ml vessel that is filled from the main bottle by a tube (hence the two caps visible in the image); this 10ml will be the right amount for 1litre (since the 250ml bottle is the right amount for 25litres). so for 5litres you can fill this small vessel 5 times and add each time to your 5 litres of fuel

**Q: Please clarify directions for use in lawnmower ?**
A: The in-built measure at side of bottle is marked 10mL. Remove associated cap and foil seal, if new, then squeeze bottle to fill this measure. Additive transfers from main bottle to measuring cup. Pour measured amount (10mL) into bulk fuel container. Repeat procedure to give correct dilution with fuel of 10ml (one measure) per litre of fuel. Shake bulk storage can to mix before adding to mower fuel tank.

**Q: will one treatment with this product really keep my store of 30L of petrol good for 3 years?**
A: it will certainly keep it good for a year,never had a reason to keep fuel any longer.

**Q: What is the difference between 992381 and 992380 please**
A: Size: the 992380 is 100ml and the 992381 is 250ml

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great
*by W***S on 23 January 2026*

Ideal genuine item

### ⭐⭐⭐⭐⭐ WHY YOU SHOULD READ THIS IF YOUR VEHICLE IS OVER TWENTY-FIVE YEARS OLD, OR NOT USED MUCH
*by D***R on 10 March 2013*

I've been using this stuff for years on the recommendation of my bike mechanic. I run a 1983 Suzuki Katana which doesn't get as much use as I'd like & can go 4-6 weeks between runs (criminal) & is usually laid up during the winter. This has the effect of "gumming-up" & "varnishing" the fuel system, especially the carbs, resulting in a time consuming & COSTLY strip down & rebuild - believe me, I speak from experience. Big Pete put me onto this stuff after said rebuild & I use it throughout the season in both my bike (& my mower). I top my tank up with petrol, then add this when I get home at the end of a run, letting the engine idle on tick-over just to get it through the system. The other thing you may not be aware of is that petrol goes "off" in as short a space of time as a month - that's why if you leave fuel in your mower over winter, you will struggle to start it - this stuff will stabilise the petrol meaning that it remains fresher. Again, useful if you only manage to get out on your bike once a month. However, contrary to what other reviewers say, this product WILL NOT protect against ethanol corrosion (but see update below)- do not use this product thinking you are protected against Ethanol corrosion - "The 999005E 125ml fuel additive has now been replaced with a 250ml bottle under part number 992381. This new formula is designed to work with and protect petrol which contains up to 10% ethanol. Most current UK petrol contains 5% ethanol. The older additive did not offer this protection hence its replacement. Available to you via your normal supplier. I hope this helps." - (Briggs & Strattons' response to the request for clarification as to whether this product offers Ethanol protection). Ever heard of Ethanol Corrosion? If your car or bike is less than twenty-five years old , don't worry. If, on the other hand, you run a classic vehicle (& I don't mean 50-60 years old but on some, less than 25 years old. Best check the exact age for your own vehicle but generally anything from before the early nineties or anything with a carburettor)then you do need to be aware of this potentially costly issue. "The greatest risk from ethanol in unleaded fuel is corrosion from the prolonged storage of fuel in the fuel tank. Classic fuel tanks are commonly made up of lead/tin alloy plated steel that is susceptible to ethanol corrosion. Ethanol is also corrosive to other metallic components including zinc, brass, lead and aluminium which will degrade over time under prolonged exposure to ethanol. In addition ethanol will also attack non-metallic materials such as rubber, cork gasket & leather that can result in costly problems with fuel hoses, seals, washers and gaskets." (Millers Oils) - Technically, it's not the Ethanol itself that causes corrosion, but the water in the Ethanol. Do a bit of research & do something about it. You can either replace the entire fuel system or use an additive - I'm lazy so I use an additive. But not this one - it does not offer Ethanol Protection!! There are a few companies that offer additives (Millers, Frosts, Flexolite) - I use Flexolite, mainly because the mix ratio is low enough to be able to carry it with me whilst I'm out. So does this stuff work? Well so far the carbs have not have to be stripped & rebuilt again, so I'm going to say yes. But do some research about Ethanol in fuel systems - it will scare the pants off you. Please note - I am not an expert, but have done a lot of reading about it. UPDATE - 01.11.13 In case you're thinking I've lost my marbles, this is NOT the product I originally reviewed. That has been replaced by the newer version which DOES protect against Ethanol corrosion as mentioned in the Briggs & Stratton email. I've left the original review in the hope that people will start to wake up to the issues surrounding Ethanol

### ⭐⭐⭐⭐ Not convinced (yet - but keep reading).
*by R***T on 1 July 2024*

Some reviewers claim this product cures mower-engine "spluttering". I've been using this for about a month and haven't found that to be true, yet. Maybe continued use will make the difference. It's also claimed to make stored petrol last MUCH longer. Ask me in Summer 2025 if that's the reality (or not). Untreated, petrol has a self-life of only 3-6 months. One thing I would add.... the poor instructions provided. There's a diagram on the bottle, which seems to be saying add 10 mililiters of product to 25 liters of petrol. It would be very useful if this could be confirmed in the instruction's text - I can't see any mention, myself. They print the health-warning in four different languages, but miss out the most important bit of the text. Not very impressive! With some caution, I would say this is a worthwhile product.

## Frequently Bought Together

- Briggs & Stratton Fuel Fit Additive/Stabiliser. 992381
- Briggs & Stratton 100006E 4-Stroke Lawn Mower Engine Oil SAE30, 1.4 l, Black, 1.4 Litre
- CarPlan TPH005 5L Fuel Can, Unleaded Petrol (Green)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-10*