How many litres of fuel will this 250ml bottle treat?

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

Please clarify directions for use in lawnmower ?

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.

will one treatment with this product really keep my store of 30L of petrol good for 3 years?

it will certainly keep it good for a year,never had a reason to keep fuel any longer.

What is the difference between 992381 and 992380 please

Size: the 992380 is 100ml and the 992381 is 250ml

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Briggs & Stratton Fuel Fit Additive/Stabiliser. 992381

Product ID: 47954628

Details

Brand
Briggs &
Exterior finish
Metal
Inlet connection type
Thread
Manufacturer
Briggs &
Material
Metal
Number of Packs
1

⏳Keeps fuel fresh up to 3 years

🧼Detergent prevents gum & varnish build-up

🛡️Protects engine from ethanol corrosion

MX$1068

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Description

🛠️ Fuel Fit: The secret weapon for flawless engine starts and unbeatable fuel longevity!

ETHANOL CORROSION DEFENSE - Shield your engine from damaging ethanol-water effects with advanced corrosion inhibitors.
LONG LASTING FUEL FRESHNESS - Extend your fuel’s life for up to 3 years—no more stale starts.
METAL DE ACTIVATORS AT WORK - Stops harmful chemical reactions from dissolved metals, preserving engine integrity.
STRESS FREE SEASONAL STORAGE - Perfect for winter or long-term storage—start your mower without a hitch, every season.
CARBURETTOR CLARITY GUARANTEED - Detergent formula keeps carburettors clean for effortless, first-try starts every time.

Briggs & Stratton Fuel Fit Additive/Stabiliser (250ml) is a premium fuel treatment that keeps petrol fresh for up to 3 years while protecting engines from ethanol corrosion and gum build-up. Featuring detergent ingredients and metal de-activators, it ensures easy starting and long-term engine health, making it essential for seasonal storage and reliable performance.

Specifications

ASIN	B003374F9E
Best Sellers Rank	957 in Automotive ( See Top 100 in Automotive ) 1 in Car Petrol Injection Nozzles 29 in Fuel Systems
Brand	Briggs & Stratton
Connector Type	Threaded
Customer Reviews	4.6 out of 5 stars 3,334 Reviews
Exterior Finish	Metal
Exterior finish	Metal
Inlet Connection Type	Thread
Inlet connection type	Thread
Item Type Name	Fuel Fit Fuel stabiliser
Manufacturer	Briggs & Stratton
Material	Metal
Model Number	992381
Number of Packs	1
Number of Ports	2
Number of ports	2
Outlet Connection Type	NPT
Outlet connection type	NPT
Part Number	992381
Set Name	Briggs & Stratton
Size	1/4" or 3/8"
Thread Size	1/4" or 3/8"
Thread Type	NPT
UPC	798256131028
Unit Count	1.0 count
Valve Type	Gate Valve

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MX$1068

Duties & taxes included

In stock

Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Mexico.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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