How do I clean this crap out of my radiator? Followed directions and now my head gasket doesn't leak but my radiator is totally clogged. Rad was new.

It’s a 32 ounce bottle. If you’re putting it in a car you should only use 10 ounces. I wonder if you didn’t use a whole bottle, perhaps? I added a whole bottle to my Kenworth and my problem was solved. I had a Radiator seam leak in a plastic/aluminum radiator

is there a limit to size of leak?

I had a small leak on the head gasket it sealed it fine I believe it would seal a larger leak, be sure to take your thermostat out and flush the cooling system at least four times follow the directions on the bottle.

I wish to know that. I suggest all headache should go to the manufacturer because she did make function test except it does 'block the leaking'. I believe she does not know how to prevent the block of the coolant level sensor; how to prevent the trigger of high temperature warning from the temperature sensor of the engine...etc.

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K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz

Product ID: 6911365

Details

Brand
K & W
Color
gray
Manufacturer
CRC
UPC
078372012242
Unit Count
1 Count

⚡Military-strength fiber tech

🌡️Lowers engine operating temp

🛠️Permanent fix in ≤30 mins

$117.03

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Description

🛠️ Fix leaks like a pro—fast, permanent, and hassle-free!

ENGINE COOLING OPTIMIZER - Cool-X Conditioner lowers operating temperature, enhancing engine performance and longevity.
ADVANCED NANOTECH FORMULA - Repairs even the tiniest cracks with cutting-edge nanotechnology for long-lasting durability.
FAST PERMANENT LEAK REPAIR - Seals larger holes quickly with less fluid loss—get back on the road in under 30 minutes.
EFFORTLESS POUR IN APPLICATION - No draining needed—just pour and fix leaks directly through your cooling system.
MILITARY GRADE FIBER REINFORCEMENT - Creates a multi-layer web-like seal that outperforms standard gasket repair products.

K&W 401224 FiberLock Head Gasket & Block Repair is a 32 fl oz premium coolant additive that permanently seals leaks in engine cooling systems using military-strength fibers, nanotechnology, and a cooling conditioner. Compatible with all antifreeze types, it repairs larger holes in 30 minutes or less without draining the system, lowers engine temperature, and comes with a 2-year manufacturer warranty.

Specifications

ASIN	B006OW2PIS
Best Sellers Rank	#70,769 in Automotive ( See Top 100 in Automotive ) #54 in Gasket Sealers
Brand Name	K & W
Color	gray
Customer Reviews	4.1 4.1 out of 5 stars (900)
Global Trade Identification Number	00078372012242
Item Type Name	Fiberlock
Manufacturer	CRC
Model	401224
Part Number	401224
UPC	078372012242
Unit Count	1 Count
Warranty Description	2 year manufacturer

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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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TrustScore 4.5 | 7,300+ reviews

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

2 days ago

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The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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$117.03

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Fantastic and great service. Shipping was faster than expected.

1 week ago

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