How well does this work with ethanol-based fuels?

Absolutely fine. I sealed the steel tank on a 1986 F150 that I fill religiously with 87 10% ethanol. Hasn't leaked in over a year.

How big of an area will one kit repair? Example 4 x 6 inches etc?? Thanks -Mike-

If you need the fiberglass patch, I think it was about 2"x4". If you're just using the epoxy, it will cover more area - probably a 10"x10" area or even larger if it doesn't need to be too thick. Just a word of caution that once you start mixing the 2 chemicals it starts to harden within about 15mins, so you don't have a lot of time to delay. I learned this the hard way. :(

Antique oil lantern with leaky reservoir about 2 inches in diameter. There are several pinholes in the steel. Will this coat the entire bottom?

Yes it should ,but you must make sure it is clean and all the oil is removed. Or it may not stick to metal. . I don't know if it's permanent. I did my gas tank 5 years ago and I see a drop under the car

How well will this product hold up to vibrations? I have a fuel tank on a generator with a crack which meed fixing

I would say pretty well. If properly applied it dries just as hard as regular JB Weld. Used the fuel patch on a tank for an old farm truck, didn't leak for the two years I had the truck.

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J-B Weld 2110 Metal Fuel Tank Repair Kit, Gray

Product ID: 207510764

Details

Brand
J-B Weld
Item form
Putty
Material
Metal
Special feature
Strong
Specific uses for product
Metal Tank Oil

📦All-in-one kit with epoxy, fiberglass, sandpaper & applicator

⚙️Repairs cracks up to 4" long

🛠️Fixes holes up to 3/8" diameter

176.72 DT

Duties & taxes included

In stock

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Description

🛠️ Fix it once, fix it right — the ultimate metal fuel tank savior!

COMPLETE REPAIR KIT - Includes everything you need—epoxy putty, fiberglass cloth, sandpaper, and applicator for a seamless repair
PRECISION REPAIR SIZE - Handles cracks up to 4" and holes up to 3/8" for targeted, reliable fixes
NO TANK REMOVAL NEEDED - Stop leaks fast without the hassle of removing your fuel tank
VERSATILE METAL REPAIR - Perfect for gas tanks, oil pans, and other metal surfaces—trusted by pros and DIYers alike
PROFESSIONAL GRADE DURABILITY - State-of-the-art components deliver a permanent, strong bond trusted for 40+ years

The J-B Weld 2110 Metal Fuel Tank Repair Kit is a professional-quality, all-in-one solution designed to permanently repair leaks in metal fuel tanks. It handles cracks up to 4 inches and holes up to 3/8 inch without tank removal, featuring epoxy putty, fiberglass cloth, sandpaper, and an applicator. Trusted by mechanics and DIY enthusiasts for over 40 years, it delivers a strong, durable bond that keeps your metal tanks leak-free.

Specifications

ASIN	B01IOPE65M
Best Sellers Rank	6,142 in Automotive ( See Top 100 in Automotive ) 80 in Fillers, Adhesives & Sealants
Brand	J-B Weld
Colour	Gray
Compatible Material	Metal
Container Type	Kit
Customer Reviews	4.2 4.2 out of 5 stars (1,354)
Global Trade Identification Number	00043425021106
Included Components	Epoxy Putty^Fiberglass Cloth^Sand Paper^Applicator
Item Form	Putty
Item Package Quantity	1
Item Type Name	Metal Fuel Tank Repair Kit
Item Weight	40 Grams
Manufacturer	JBWeld
Manufacturer Part Number	2110
Material	Metal
Model Number	2110
Number of Packs	1
Number of Pieces	1
Other Special Features of the Product	Strong
Specific Uses For Product	Metal Tank Repairs, Oil Pan Repairs
UPC	043425021106
Unit Count	1.0 count
Water Resistance Level	Waterproof

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TrustScore 4.5 | 7,300+ reviews

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176.72 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered 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 Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Zainab N.

Fantastic and great service. Shipping was faster than expected.

1 week ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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