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.

Sta Bil 22239 Marine Fuel Stabilizer 8 Oz

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

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€ 55.30

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Reviews

User

Excellent

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

18.02.2026

User

Easy to measure and use.

Easy to use and economical additive for boat fuel.

21.01.2026

User

Only time will tell.

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

23.06.2024

User

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

User

Great for Boats

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

21.11.2025

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€ 55.30

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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Asin	B000UJG0LE
Best Sellers Rank	#67 in Petrol Additives
Date First Available	3 August 2012
Is Discontinued By Manufacturer	No
Item Dimensions Lxwxh	18.7 x 9.7 x 4.2 Centimeters
Item Model Number	22239
Item Weight	245 g
Product Dimensions	18.67 x 9.65 x 4.19 cm; 244.94 g

STA-BIL 22239 Marine Fuel Stabilizer - 8 oz.

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Common Questions