Review on Prestone AS661 Engine Block Stop Leak with Kevlar: Powerful 16.5 fl. oz. Solution for Effective Leak Repair by Josh Culotta

Name: Prestone AS661 Engine Block Stop Leak with Kevlar: Powerful 16.5 fl. oz. Solution for Effective Leak Repair
Item: Prestone AS661 Engine Block Stop Leak with Kevlar: Powerful 16.5 fl. oz. Solution for Effective Leak Repair
Rating: 2

February 09, 2023

Will not freeze in storage

Bought all three Prestone Kevlar sealants (head, block, etc.) to use on my tractor. However, I've never been able to use any of them. What the instructions don't tell you is that the clear liquid in the sealant will expand and rupture the clear plastic container if stored in an unheated garage that can drop below 32 degrees Fahrenheit. What a mess! I had to dispose of all 3 containers. I will buy again in spring!

Pros

Loads of positive vibes

Cons

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