Should I really use STA-BIL 360 Marine before every fill-up? Is it truly necessary?

To be blunt, yes, especially if you want to protect your investment. Boats live in a high-moisture environment. STA-BIL 360 Marine is engineered to protect your tank from corrosion and optimize the fuel in the process.

If the color of the liquid in the bottle is no longer blue, is it still safe to use?

Yes. It is possible for the dye in the formula to fade, but it is still perfectly functional.

What happens if I add too much fuel additive to my tank? Will it harm the engine?

No. Overpouring will not cause significant damage to your fuel tank. However, it’s best practice to avoid making this a habit. Miscalculating by an ounce here or there, so long as it is not over four total ounces, is acceptable.

Stabil 22239 Marine Fuel Stabilizer 8 Oz

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

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$144.28

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered 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 Ecuador.

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Description

🛥️ Keep your fuel fresh, your engine happy, and your adventures unstoppable!

COMPACT CLEAR - Small, clear formula fits easily in your gear bag without adding bulk or confusion.
PRECISION 8 OZ DOSING - Easy-to-measure size ensures no waste and perfect fuel protection every time.
LONG LASTING STABILITY - Keeps gasoline fresh and prevents corrosion for up to 12 months, so your boat is always ready to go.
TRUSTED BY PROFESSIONALS - 4.8-star rating from over 1,800 users proves STA-BIL is the go-to for serious boaters.
MARINE GRADE FUEL PROTECTION - Specifically formulated to keep your outboard engine running smoothly season after season.

STA-BIL 22239 Marine Fuel Stabilizer is an 8 oz high-density polyethylene bottle of premium gasoline additive designed to protect marine engines by stabilizing fuel for up to 12 months. With a 4.8-star rating from over 1,800 reviews, it prevents corrosion and keeps your outboard motor running smoothly, making it a must-have for any serious boater.

Specifications

ASIN	B000UJG0LE
Best Sellers Rank	#58,670 in Automotive ( See Top 100 in Automotive ) #268 in Oil & Fluid Additives
Brand	STA-BIL
Brand Name	STA-BIL
Capacity	8 Fluid ounces
Color	Clear
Colour	Clear
Customer Reviews	4.8 out of 5 stars 1,812 Reviews
Fuel Type	Gasoline
Fuel type	Gasoline
Global Trade Identification Number	00073905222396, 30073905223097
Item Weight	0.54 Pounds
Item weight	0.54 Pounds
Material	High Density Polyethylene (HDPE)
Model Number	22239
Part Number	770-176
UPC	073905222396 182682942097
Unit Count	1 Count

Reviews

R**R

Excellent

Best stabiliser I have found. Run it in my Bf115 Honda outboard.

18.02.2026

F**I

Easy to measure and use.

Easy to use and economical additive for boat fuel.

21.01.2026

S**.

Only time will tell.

It seems not as my fuel separator has no water in it but only time will tell.

23.06.2024

M**.

Great fuel stabiliser!

Use this to store petrol in a 20 litre jerry can to fill boat and lawnmower tanks. The petrol seems to keep forever!

3.08.2025

S**R

Great for Boats

My Petrol had split , added this and it made sure boat started first time .

21.11.2025

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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4 days ago

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$144.28

Duties & taxes included

In stock

Sold byAmazon EcuadorDelivered 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 Ecuador.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago