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Pros & Cons
Pros
Put it in and drove on a 350 mile trip. Completely ended the problem with my sonic. I plan to rebuild it next summer so just needed to make it last.
There were no globs in the mixture when added back into the radiator. Simply crush tablets into powder form and pour into pressurized coolant surge tank or radiator. Add directly to radiator to stop leaks.
Ac delco tabs are the best. Preliminary results are very encouraging.
Cons
Not off to a great start. Didn't work for a head gasket leak in my trailblazer straight six. The leak is between cylinders so there was no visible evidence of a leak because it was being burned.
Highlights
Quality
Amazing and works exceedingly well won t hurt your systems 171000 miles and running strong.
Great product for aluminum block to aluminum head.
Heater core was leakingand i crunched all 5 of them up put into the radiator let it circulate for 30 minutes .
Within 3 minutes the persistent radiator leak from around the bottom seam of the radiator had completely stopped!
Price
This patch has bought me valuable time while i manage for the $1,200 for the permanent repair.
To have all these leaks fixed would have been extremely expensive, especially the head gasket replacement.
Separately i purchased an inexpensive (about $40) cooling system pressure test kit here on amazon to perform a "before" and "af... Read More
For $5 you often get lucky and never see the leak again.
Packaging/appearance
They don't seem like much, n fancy package, no bright entertaining colors.
Highly suggest i keep an extra package in the glove box inside a sealed bag.
Competitiveness
Better than other products out on the market.
All the online forums suggest the lim gasket needs to be replaced, which is a very expensive job.
Overview
- How are reviewers describing this item?
great and small. - Our engine has profiled the reviewer patterns and has determined that there is high deception involved.
- Our engine has analyzed and discovered that 59.2% of the reviews are reliable.
- This product had a total of 734 reviews as of our last analysis date on Jan 23 2024.
Helpful InsightsBETA
Posted by a reviewer on Amazon
My truck has the infamous cracked castech heads
Posted by a reviewer on Amazon
My coolant would leak into the combustion chamber and i would have to top it off every week
Posted by a reviewer on Amazon
It’s not worth investing the time to tear the engine apart and replacing it
Posted by a reviewer on Amazon
So i decided to put some of these in the radiator and it’s been roughly 100 miles and i haven’t lost any coolant
Posted by a reviewer on Amazon
I would recommend giving these a try if you have the castech head issue
Posted by a reviewer on Amazon
I will update if it starts leaking again
Posted by a reviewer on Amazon
Bought this in june its now january
Posted by a reviewer on Amazon
Its worth it if u can save the money and fix it pretty quick
Review Count History
Price History
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