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: 260384377

Details

Brand
K&W
Colour
gray
Manufacturer
CRC
Shape
Cylindrical
UPC
078372012242

🔧seals larger holes, less fluid loss

❄️cools engine, lowers operating temp

🛠️3 unique repair technologies

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Description

🛠️ Fix it once, fix it right — the ultimate head gasket hero!

COOL X CONDITIONER - Lowers engine operating temperature, enhancing cooling system efficiency and longevity.
NANOTECH PRECISION SEAL - Permanently fixes even the tiniest cracks and crevices with cutting-edge nanotechnology.
UNIVERSAL COMPATIBILITY - Works seamlessly with all antifreeze types or plain water—no compatibility worries.
LAB TESTED SUPERIOR SEAL - Proven by ASTM D6107 to seal larger holes with less fluid loss than competitors.
MILITARY STRENGTH FIBER WEB - Creates a durable multi-layer repair over cracks for long-lasting engine protection.

K&W 401224 FiberLock is a 32 fl oz permanent head gasket and block repair solution featuring 3 advanced technologies—military-strength fibers, nanotechnology, and Cool-X Conditioner. It seals cracks and holes in engine blocks and cooling systems, lowers operating temperatures, and works with all antifreeze types. Lab-tested for superior sealing performance, it’s the go-to fix for professional-grade engine maintenance.

Specifications

ASIN	B006OW2PIS
Best Sellers Rank	#74,235 in Automotive ( See Top 100 in Automotive ) #266 in Automotive Fillers, Adhesives & Sealants #2,109 in Oils & Fluids
Brand Name	K&W
Color	gray
Customer Reviews	4.0 4.0 out of 5 stars (824)
Global Trade Identification Number	00078372012242
Item Shape	Cylindrical
Item Type Name	Fiberlock
Manufacturer	CRC
Model	401224
Number of Items	1
Part Number	401224
UPC	078372012242

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71724CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered 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 Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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