how do I add it? just pour into antifreeze?

This product has to be used without antifreeze. You have to drain out your cooling system. This company does make a product that you can mix with antifreeze though.

Where is their warranty claim form. I cant seem to find it anywhere?

I don’t think there’s really much of a warranty claim just may be a refund if you even want to try to attack that

what does it do to a good radiator . does it build up inside the tubes?

I will get a thing layer, but won’t block the radiator tubes. But actually does work A+

how does this not seal the thermostat?

Directions say to take thermostat out.

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K&W 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 Fl Oz

K&W 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 Fl Oz

Product ID: 6911247

Details

Brand
K & W
Item Weight
2.5 Pounds
Liquid Volume
32 Fluid
Material
Copper
Package Information
Bottle

📏32 fl oz precision volume

🧪Nanotech crack filler

🛠️Permanent metal bond

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$92.81

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Description

🛠️ Seal the deal with nanotech precision – never worry about leaks again!

GENEROUS 32 OZ BOTTLE - Enough volume to tackle multiple repairs without compromise
COPPER INFUSED FORMULA - Enhances thermal conductivity and metal compatibility
INDUSTRIAL GRADE STRENGTH - Trusted for heavy-duty mechanical and automotive applications
NANOTECHNOLOGY POWERED REPAIR - Fills micro-cracks & crevices for unmatched durability
PERMANENT HEAD GASKET SOLUTION - Creates a solid, long-lasting bond that outperforms traditional sealants

K&W 401232 Permanent Head Gasket & Block Repair leverages advanced nanotechnology and a copper-infused formula to permanently seal cracks and leaks in engine head gaskets and blocks. Packaged in a 32 fl oz bottle, this industrial-strength liquid repair solution ensures a durable, heat-resistant bond that restores engine integrity and prevents costly breakdowns.

Specifications

ASIN	B000M8NZ70
Best Sellers Rank	#383,011 in Automotive ( See Top 100 in Automotive ) #144 in Gasket Sealers
Brand Name	K & W
Container Type	Bottle
Customer Reviews	3.9 3.9 out of 5 stars (368)
Global Trade Identification Number	00078372012242, 00078372012327
Item Form	Liquid
Item Type Name	Automotive Accessories
Item Weight	2.5 Pounds
Liquid Volume	32 Fluid Ounces
Manufacturer	CRC
Material	Copper
Model Number	401232
Number of Items	1
Part Number	401232
Recommended Uses For Product	Automotive
Specific Uses For Product	Automotive repair
UPC	078372012327
Unit Count	32.0 Ounce
Warranty Description	2 YEAR MANUFACTURER WARRANTY

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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

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Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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$92.81

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In stock

Sold byAmazon British Virgin IslandsDelivered 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 British Virgin Islands.

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TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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