After you use it you have to change the motor oil my oil look like milk ?

A water cooling system leak into the interior of the engine mixing with the oil lubricating system produces a yellowish off white foam. Either a cracked block or head or a leaking head gasket are the usual suspect for this. I even have had a badly leaking cooling tube under the intake manifold on a 4.6 Liter Ford that no coolant leak additive could fix--a removal of intake manifold and replacement of tube was the only fix. It is very common for Aluminum head/block warpage due to even a one time overheating to cause head gasket leakage that only engine teardown and having the warp leveled can fix. For reasonably small leaks, I have used radiator sealer to stop them.

Do you have to flush the radiator first?

Yes, I would flush it first, then add the installation seal.

Does it says for how many cylinders it will work per .oz used

Didn't work on 6 cylinder for me.

Will this work on a cracked block and water cooled manifold in a closed Mercruiser 5.7 liter V8 boat engine? Thanks.

It depends on how big the crack is. If very big probely not. My experience with with water manifold not likely.

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Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz.

Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz.

Product ID: 399115443

Details

Brand
HI-GEAR
Item Weight
0.6 Pounds
Item dimensions L x W x H
5.7 x 5.7 x
Material
Silicone
Style
Compact

¥8857

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Specifications

ASIN	B005VXFBIC
Brand Name	HI-GEAR
Compatible Material	Wood, Concrete, Metal, Glass, Plastic, Composite Materials, etc.
Country of Publication	USA
Customer Reviews	3.7 3.7 out of 5 stars (137)
Global Trade Identification Number	00009603190484
Item Dimensions	5.7 x 5.7 x 18.1 Centimeters
Item Form	Liquid
Item Weight	0.6 Pounds
Manufacturer	Hi-Gear
Manufacturer Part Number	HG9048S
Material Type	Silicone
Model	HG9048s
Style Name	Compact
Surface Recommendation	Door, Siding, Wall, Window
UPC	009603190484
Unit Count	236.59 Milliliters

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¥8857

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz.

Details

Details

Description

Specifications

Common Questions