Can anyone tell me if there is an alternative for diesel please?

Yes there is. Just type on Google Stabil 360 Diesel and you shall be showered with options where to buy them. Good luck

Is this the best fuel stabiliser for a 2-stroke 2.5hp mercury outboard?

I have 115hp Yamaha outboard. I dont think this is a stabiliser as such. I use it as a fuel enhancer and add to fuel for normal use. I use the Sta-bil Storage liquid when I leave the boat which can be for four or five months. Had problems before I used it but now engine starts however long its left. I'd recommend both and use them as appropriate.

Is this safe to mix with lead substitute additive already being used in the fuel tank of the car?

I will say so as this is only a fuel stabiliser and water moisture repellent. This is mainly used on boats giving the higher humidity content.

Is 1oz to 10gals in american gallons

Hi David, I am a regular user of this product. The dosage instructions state 1oz to 10 US gallons or 30ml to 38 litres. There are "oz" and "ml" markers on the bottle neck so it is very easy to measure and use. You don't have to be exact if you have an unknown quantity in a tank. This product works very well and is used in my collection of classic cars and bikes as they are run in rotation. I have not experienced any fuel related problems since using this.

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360 Marine Ethanol Treatment and Fuel Stabilizer - Prevents Corrosion - Helps Clean Fuel System For Improved In-Season Performance - Treats Up To 80 Gallons, 250 ml, Black

Product ID: 49108957

Details

Brand
STA-BIL
Colour
Clear
Item weight
0.54 Pounds
Material
Plastic
Product dimensions
9.7W x 4.2H

⛽Treats up to 80 gallons

⚙️4x fuel system cleaner power

🛥️Double corrosion prevention

190.94 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛥️ Keep your engine cruising, not corroding!

DEEP CLEAN FUEL SYSTEM - 4x more cleaning power than standard stabilizers ensures optimal engine efficiency.
EXTENDED FUEL PROTECTION - Treats up to 80 gallons, perfect for all your boating and water sport adventures.
TRUSTED AMERICAN INNOVATION - Proudly made in the USA and America’s #1 ethanol treatment for marine engines.
SUPERIOR ETHANOL FUEL DEFENSE - Specialized formula combats ethanol-related damage for peak in-season performance.
MAXIMIZE MARINE ENGINE LONGEVITY - Double the corrosion protection keeps your watercraft running smooth season after season.

STA-BIL 360 Marine Ethanol Treatment is a high-performance fuel stabilizer designed to prevent corrosion and clean fuel systems in marine engines. Treating up to 80 gallons, it offers double the corrosion protection and four times the cleaning power of regular stabilizers, ensuring improved year-round engine performance and longevity.

Specifications

ASIN	B000UJG0LE
Best Sellers Rank	3,298 in Automotive ( See Top 100 in Automotive ) 74 in Fuel Systems
Brand Name	STA-BIL
Capacity	8 Fluid ounces
Colour	Clear
Country of Origin	USA
Customer Reviews	4.6 4.6 out of 5 stars (2,380)
Fuel Type	Petrol
Global Trade Identification Number	00073905222396, 30073905223097
Included Components	Unit^Instruction Guide
Item Dimensions W x H	9.7W x 4.2H centimetres
Item Type Name	GREASE & OIL
Item Weight	0.54 Pounds
Manufacturer	Gold Eagle Co.
Material	Plastic
Model Number	22239
Number of Items	1
Part Number	770-176
UPC	073905222396 182682942097
Unit Count	1 count

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